Quick answer: The best Shopify product add-ons app in 2026 is Oxify Cart Drawer & Upsells — a 5.0-rated, Built for Shopify app that handles product page add-ons, cart drawer upsells, and post-purchase offers in one tool, with smart trigger targeting and conditional discounts. For free FBT widgets, Selleasy is the best free option. For pure product page add-on widgets, Essential Upsell & Cross Sell is a strong runner-up. For gift wrap and warranty add-ons, Wrapped and Candy Rack specialize in those jobs.
If you sell on Shopify, here’s a number worth remembering — adding a single product add-on offer can lift your average order value by 10–30% without spending a dollar more on ads. Service add-ons like extended warranties convert at 20–35%, and gift wrap converts at 15–25% during peak gift seasons. That’s why product add-on apps are now one of the first apps merchants install after launch.
There are over 200 apps claiming to do this, most of them average. After testing the top 10 across live Shopify stores and reading 8,000+ merchant reviews, here’s the shortlist that actually moves the needle in 2026.
What is a Shopify product add-ons app?
A Shopify product add-ons app lets shoppers add extra products to their order alongside the main product they’re buying — with one click and no friction. Examples:
- A phone case shown next to a phone.
- A 2-year warranty added to a laptop.
- Gift wrap or batteries on a toy product page.
- A travel-size cleanser added at the cart.
The shopper doesn’t leave the page. They tick a box, the add-on lands in their cart, and your average order value jumps. If you want a deeper dive on the strategy side, our Shopify upselling strategies guide covers the full AOV playbook.
The 4 jobs of a Shopify product add-ons app
Most “best of” lists rank 8 apps by review count and recommend the same one for everyone. That misses how add-ons actually work. There are four distinct jobs, and the right app depends on which one matches your catalog.
Job 1 — Complementary product add-ons. A laptop bag next to a laptop. A memory card next to a camera. A protein shaker next to a protein tub. These appear on the product page or in the cart drawer, usually as “Frequently Bought Together” or “You may also like” widgets. Best apps: Oxify, Selleasy, Essential Upsell.
Job 2 — Service add-ons. Extended warranties, protection plans, priority shipping, installation services. These convert at 20–35% because they remove a real anxiety (“what if it breaks?”). Best apps: Candy Rack, Oxify.
Job 3 — Gift options. Gift wrap, gift messages, greeting cards. These spike to 15–25% acceptance in peak gift seasons (November-December, Mother’s Day, Valentine’s Day). Best apps: Wrapped, Super Gift Wrap, Oxify. Our gift wrap setup guide covers how to add this without an app too.
Job 4 — Free gift add-ons. “Spend $75, get a free travel-size cleanser.” Triggered by cart value, quantity, or specific products in cart. Best apps: BOGOS, Oxify. We have a full free gift in cart drawer guide and a manual gift selection walkthrough for the tactical side.
The strongest add-on stacks rarely involve picking just one app. Most merchants combine Oxify (jobs 1, 3, and 4 covered) with a specialist for job 2 (Candy Rack for warranties).
What are the benefits of using a Shopify product add-ons app?
Five reasons stores install one in 2026:
- Higher AOV — most stores see a 10–30% jump in average order value within 30 days.
- Cheaper than ads — selling more to existing visitors is 5–7× cheaper than buying new traffic.
- Better margins on accessories — add-ons are usually high-margin (cases, batteries, warranties).
- Smarter cart fills — a $4 add-on closes the gap to your free shipping threshold (more on that in our free shipping bar guide).
- Reduced returns — bundling complementary products together (camera + memory card) means fewer “I forgot the cable” complaints.
The math is simple. If your store does $50,000/month and you lift AOV by 15%, that’s an extra $7,500/month — for a $19.99 app. We unpacked the conversion rate side of this in Frequently Bought Together conversion rate.
Best Shopify product add-ons apps in 2026 — full comparison table
We ranked these on five criteria: functionality breadth, ease of use, scalability, merchant ratings, and the “Built for Shopify” badge.
| Rank | App | Best for | Rating | Reviews | Free trial | Strengths | Drawbacks | Starting price |
|---|---|---|---|---|---|---|---|---|
| 1 | Oxify Cart Drawer & Upsells | All-in-one add-on funnel | 5.0 | Built for Shopify | ✅ | Product page + cart + post-purchase, collection-level triggers, conditional discounts | Newer than competitors | $19.99/mo |
| 2 | Selleasy | Free FBT widget | 4.9 | 2,300+ | ✅ Free plan | Amazon-style FBT, multi-language, free up to 50 orders | No free gift logic, basic cart drawer | Free / $8.99 |
| 3 | Essential Upsell & Cross Sell | Pure product page add-ons | 5.0 | 2,116+ | ✅ Free plan | Drag-and-drop editor, 5.0 rating | Limited beyond product page | Free / $9.99 |
| 4 | BOGOS | Free gift add-ons | 5.0 | 3,680+ | ✅ Free plan | Best free gift logic, 3,600+ reviews | Dated widget styling | Free plan |
| 5 | ReConvert | Post-purchase add-ons | 4.9 | 5,800+ | ✅ Free trial | One-click thank-you upsells, A/B testing | Almost zero pre-purchase features | $4.99 |
| 6 | Fast Bundle | Bundles, kits & combos | 4.9 | 1,400+ | ✅ Free trial | BYOB builder, mix-and-match, kits | Setup is complex | $19.99 |
| 7 | Bundler | Cheapest paid plan | 4.9 | 2,168+ | ✅ Free plan | Lowest paid price, POS integration | Dated styling | Free / $9.99 |
| 8 | Simple Bundles & Kits | Multi-SKU 3PL kits | 4.8 | 703 | ✅ Free plan | Bypasses 2,048 variant limit, 3PL sync | Not a widget tool | Free plan |
| 9 | BIG Digital Downloads | Digital product add-ons | 4.9 | 776 | ✅ Free plan | Auto-emails downloads, license management | Limited physical-product features | Free plan |
| 10 | Bold Upsell | Plus stores | 4.7 | 1,500+ | ✅ Free trial | Smart AI funnels, deep checkout integration | Pricing scales with views | Usage-based |
For specialty add-on jobs, also consider Candy Rack (warranties, $29.99/mo, 4.9★), Wrapped (gift wrap, ~$9.99/mo, 5.0★), and Hulk Product Options (customization with conditional logic, $10/mo, 4.7★).
1. Oxify Cart Drawer & Upsells — Best Overall
Rating: 5.0 stars · Built for Shopify · Pricing: $19.99–$149.99/month · Free trial: Yes
If you want one app that handles every kind of product add-on across the entire shopper journey, this is the one to install.
Most apps on this list cover one or two placements. Oxify covers the whole add-on funnel:
- Product page add-ons — show extra products as “You may also like” cards under the buy button.
- Cart drawer upsells — push complementary products inside the slide cart.
- Frequently Bought Together (FBT) — AI-powered recommendations (we wrote a full guide on FBT apps too).
- Free gift add-ons — trigger a free product at $X cart value.
- Free shipping bar — encourage shoppers to add one more item.
- Volume discounts — quantity breaks built in (see our quantity breaks guide).
- Post-purchase upsell — last-chance add-on after checkout. (We compared the best post-purchase upsell apps separately.)
- Shipping protection & subscriptions — both included natively.
How the product add-on builder works
Inside Oxify’s offer builder, you simply:
- Pick “Product add-on” as the offer type.
- Set the title (e.g., “You may also like” or “Pair this with”).
- Pick which products trigger the offer.
- Pick which products show as add-ons.
- Add an optional discount.
- Hit publish.
The shopper sees a clean checkbox list under the main product. One tap, and the add-on goes straight to cart with the original item.
What makes Oxify’s product add-on different (the features competitors miss)
Three features no other Built for Shopify add-on app combines into one tool:
1. Smart trigger targeting
You decide which product pages show the add-on. Choose from:
- All products
- Specific products only
- Products in specific collections (e.g., only “Skincare” products show “Travel-size cleanser” as add-on)
This means you can run different add-ons for different product categories — without managing 10 separate offers. Selleasy and Essential Upsell make you set this up product-by-product.
2. Conditional discounts that protect margin
Oxify lets you offer percentage-off, fixed-amount, or no discount on add-ons. The real magic is the trigger logic:
- Always discounted — the add-on is always cheaper.
- Only if trigger product is in cart — the discount only applies when bought with the main product.
That second option is huge. It stops customers from gaming the system by adding only the discounted add-on. They get the discount only when they pair it with the main item, which protects your margin. We covered this margin-protection logic in detail in how to stack Buy More Save More with other deals.
3. FBT recommendations from Shopify’s own engine
Instead of manually picking add-ons for every product, you can let Oxify pull recommendations from Shopify’s native Search and Discovery app — same data Shopify uses for its built-in product recommendations.
Pricing breakdown
Oxify uses simple, order-based pricing. No hidden usage fees, no per-impression costs:
| Total monthly store orders | Price |
|---|---|
| 0–200 orders | $19.99/month |
| 201–500 orders | $29.99/month |
| 501–1,000 orders | $49.99/month |
| 1,001–2,000 orders | $79.99/month |
| 2,001–3,000 orders | $99.99/month |
| 3,001+ orders | $149.99/month |
Compare this to usage-based apps (where revenue spikes mean app bill spikes), and you know what you’re paying every month.
What it looks like live on a product page
Once published, the offer goes live as an “Active” status — shoppers see clean checkboxes next to each recommended product, can toggle them on/off, and add everything to cart in one click.
Why it ranks #1
Most stores end up running 3–4 separate apps to cover what Oxify does in one. That hurts page speed, fragments your data, and makes your monthly app bill ugly. Oxify replaces all of them — and it’s the only Built for Shopify app that bundles every add-on touchpoint into one funnel with collection-level triggers and conditional discounts.
If you’re considering switching from a competitor, we have detailed comparisons against iCart, UpCart, Rebuy, and Kaching.
Real merchant story
A skincare brand we work with replaced four apps (a cart upsell tool, a free gift app, a shipping bar app, and a post-purchase upsell) with Oxify. Their average order value went up 22% in 30 days, and they cut $87/month from their app stack. We wrote a similar case study on a beauty brand using FBT for reference.
Best for
Stores doing $5k–$500k/month who want one tool for the whole add-on journey, plus a 5.0 rating they can trust.
Try it free: apps.shopify.com/ia-cart-drawer-free-gifts
2. Selleasy Upsell & Cross Sell — Best Free Tier
Rating: 4.9 stars (2,300+ reviews) · Built for Shopify · Pricing: Free up to 50 orders/month, then $8.99/month
Selleasy is the most-installed Amazon-style FBT widget on Shopify. The free plan covers up to 50 orders per month, which makes it the easiest “no-risk” option for a brand-new store.
Strengths:
- Clean Amazon-style “Frequently bought together” widget.
- Mobile-friendly out of the box.
- Multi-language and multi-currency.
- Setup in under 10 minutes.
- Genuinely free up to 50 orders/month.
Drawbacks:
- No free gift logic (“spend $X get Y free” not supported).
- No volume discounts.
- No collection-level trigger targeting (you have to set offers manually per product).
- The cart drawer upsell is basic — see our cart drawer apps comparison for stronger options.
Best for: Brand-new stores under 500 orders/month who only need basic product page FBT and simple cart upsells.
3. Essential Upsell & Cross Sell — Best Pure Product Page App
Rating: 5.0 stars (2,116+ reviews) · Built for Shopify · Pricing: Free plan available, paid from $9.99/month
A perfect 5.0 rating across 2,000+ reviews is rare on Shopify. Essential Upsell earned it by doing two things really well — product page add-ons and cart upsells — without trying to be everything.
Strengths:
- Drag-and-drop editor (most merchants set up in 30 minutes).
- Frequently bought together widget on product pages.
- Cart drawer add-ons.
- Automatic discounts on add-on products.
- Post-purchase upsell.
Drawbacks:
- No free shipping bar.
- No volume discounts.
- No subscription support.
- Built by Essential Apps (which runs many separate apps for different features) — to cover everything you’d need 4–5 of their apps installed side by side.
Best for: Stores that just need product page FBT and cart upsells, without the rest of the funnel.
4. BOGOS Free Gift Bundle Upsell — Best for Free Gift Add-ons
Rating: 5.0 stars (3,680+ reviews) · Built for Shopify · Pricing: Free plan; paid scales with orders
BOGOS is laser-focused on free gift add-ons — the “spend $75, get a free travel-size cleanser” offer. If that’s your main play, no other app does it as cleanly.
Strengths:
- Most flexible cart-value triggers on Shopify.
- Buy X Get Y rules are easy to layer.
- Add-on widgets work on product, cart, and checkout pages.
- 3,600+ reviews give it the deepest social proof on this list.
Drawbacks:
- Limited beyond gifts and BOGO (no volume discounts, no real cart drawer customization).
- Widget styling feels dated next to newer apps.
- Pricing scales aggressively past 200 orders.
Best for: Beauty, supplement, and food brands where free samples drive conversion.
5. ReConvert — Best for Post-Purchase Add-ons
Rating: 4.9 stars (5,800+ reviews) · Built for Shopify · Pricing: From $4.99/month, usage-based at higher tiers
ReConvert specializes in the thank-you page — the highest-converting placement to add a one-click add-on, because shoppers have already paid.
Strengths:
- One-click post-purchase add-ons (no re-entering payment).
- Customizable thank-you page with upsell blocks.
- Strong A/B testing.
- 5,800+ reviews — the largest on this list.
Drawbacks:
- Almost zero pre-purchase add-on functionality.
- Pricing scales with usage; can get expensive at high volumes.
Best for: Stores that already convert well and want to squeeze extra revenue from completed orders.
6. Fast Bundle — Best for Bundles, Kits & Combos
Rating: 4.9 stars (1,400+ reviews) · Pricing: From $19.99/month
Fast Bundle is for stores selling things that come in groups — skincare routines, protein stacks, candle sets. Shoppers build their own kit or combo, and add-ons appear inline as they go. It supports fixed bundles, volume discounts, mix & match, BOGO, and FBT bundles in one app.
Strengths:
- Build-your-own-bundle (BYOB) builder is best in class.
- Mix-and-match discounts.
- Bundle landing pages.
- Subscription bundle support.
- Combo kits and meal-pack style bundles.
Drawbacks:
- Discount stacking conflicts can hurt margins if you don’t set guardrails (we covered this in our stacking guide).
- Setup is more complex than the other apps on this list.
- No simple FBT widget without bundle structure.
Best for: Stores selling bundleable products. For pricing strategy, see our product bundle pricing strategy guide.
7. Bundler — Cheapest Paid Plan
Rating: 4.9 stars (2,168+ reviews) · Pricing: Free plan; paid from $9.99/month
Bundler is one of the longest-running bundle apps on Shopify and the cheapest option among full-featured paid plans. It does product bundles and add-ons well, but feels less polished than newer apps.
Best for: Budget-conscious stores who want bundle add-ons at the lowest possible monthly price.
8. Simple Bundles & Kits — Best for Multi-SKU Kits & 3PL
Rating: 4.8 stars (703 reviews) · Built for Shopify · Pricing: Free plan available
If you sell physical kits with multiple SKUs that need to ship as separate items (gift sets, meal kits, B2B multipacks), Simple Bundles handles the inventory and 3PL fulfillment side that most add-on apps ignore.
Strengths:
- Bypasses Shopify’s 2,048 variant limit.
- Auto-syncs inventory across bundle components.
- Integrates with POS, ERP, WMS, and 3PL.
- AI-suggested bundles from order history.
Drawbacks:
- Not a traditional add-on widget — it’s more of a bundle/kit fulfillment tool.
- Less effective for simple “add this accessory” use cases.
Best for: Stores selling physical kits where inventory accuracy and fulfillment matter more than upsell widget design.
9. BIG Digital Downloads — Best for Digital Product Add-ons
Rating: 4.9 stars (776 reviews) · Built for Shopify · Pricing: Free plan available
If your add-ons are digital — ebooks, PDFs, music tracks, course modules, templates — BIG Digital Downloads handles delivery automatically. The shopper buys the main product, the digital add-on emails directly with download access.
Strengths:
- Sell ebooks, PDFs, downloads, courses, audio as add-ons.
- Auto-delivery via email after purchase.
- Streaming options.
- Digital product license management.
Drawbacks:
- Limited physical-product upsell features.
- Not a “widget on product page” tool — it’s the delivery layer.
Best for: Course creators, info-product sellers, or physical-product brands selling digital companions (e.g., a recipe ebook with a kitchen gadget).
10. Bold Upsell & Cross-Sell — Best for Plus Stores
Rating: 4.7 stars · Pricing: Usage-based (scales with offer views)
Bold has been around since Shopify Plus was new. It has Smart AI funnels, true upsell upgrades, post-purchase one-click upsells, and deep checkout integration. The catch: pricing scales with offer views, which can get expensive fast.
Best for: Established stores doing $50k+/month that need enterprise-style funnels and have the budget for usage-based pricing.
How to pick the right product add-ons app for your store
Three questions to ask before you install anything:
1. Where do you want the add-on to show up?
- Product page only → Essential Upsell or Selleasy
- Cart drawer → Oxify (best), Bold, Selleasy
- Product page + cart drawer + post-purchase → Oxify
- Thank-you page only → ReConvert
If you’re stuck on cart drawer vs cart page first, we settled that debate in Shopify cart drawer vs page and slide cart vs mini cart.
2. What’s your main add-on type?
- Standard related products → Oxify, Selleasy, Essential Upsell
- Free gift at $X spend → BOGOS or Oxify
- Build-your-own bundle / kit → Fast Bundle or Simple Bundles
- Digital product add-ons → BIG Digital Downloads
- Volume discount add-ons → Oxify
3. What’s your monthly order volume?
- Under 50 orders → Selleasy free
- 50–500 orders → Oxify ($19.99) or Essential Upsell ($9.99)
- 500–2,000 orders → Oxify ($29.99–$79.99)
- 2,000+ orders → Oxify ($99.99–$149.99) or Bold
Where to find Shopify apps that let customers select product add-ons
Three places, in this order:
- Shopify App Store — go to apps.shopify.com, search “product add-ons” or “upsell,” and filter by “Built for Shopify” badge for the highest-quality apps.
- Shopify Partners blog — Shopify regularly publishes curated lists of trusted apps for upselling and cross-selling.
- Curated lists — guides like this one (and others on our Oxify blog) compare apps with hands-on testing instead of just rankings.
The fastest install path: search “Oxify Cart Drawer” inside the Shopify App Store, click install, and you’re live in under 5 minutes.
5 mistakes I see merchants make with add-on apps
After answering hundreds of merchant tickets and watching install data:
1. Stacking too many apps
Three add-on apps don’t give you 3× the lift. They slow your store, conflict with each other, and confuse shoppers. Pick one all-in-one (Oxify) or two specialized ones at most.
2. Showing add-ons that are too cheap
A $2 add-on next to a $40 product looks pointless. Real-world data shows shoppers add 10–25% of the main product’s price most often. So a $40 product needs a $4–$10 add-on, not $2.
3. Forgetting mobile
76% of Shopify traffic in 2026 is mobile. If your add-on widget pushes the buy button below the fold on mobile, your conversion rate drops. Always preview on mobile before going live.
4. Random product picks
Don’t use “best sellers” as your add-on. Use complementary products. A laptop sleeve next to a laptop. A fragrance refill next to the candle. AI recommendations (built into Oxify and Bold) make this automatic.
5. Skipping post-purchase
The thank-you page is the highest-converting place to add a one-click upsell because shoppers have already paid. Most merchants ignore it. Don’t be one of them — and if cart abandonment is the bigger issue, our cart abandonment cart drawer guide has the playbook.
Frequently asked questions
What is a product add-ons app on Shopify?
A product add-ons app lets you show extra products alongside the main product a shopper is buying. They can add the extras with one click — on the product page, in the cart drawer, or on the thank-you page. The goal is to lift average order value (AOV) without disrupting the main checkout flow.
What are the best Shopify product add-ons apps for increasing sales?
For pure sales lift, the top three are Oxify Cart Drawer & Upsells (covers product page, cart, and post-purchase add-ons in one app, 5.0 rating), Selleasy (Amazon-style FBT widget, free up to 50 orders), and BOGOS (best for free gift add-ons that trigger above $X cart value). Oxify is the only one of the three that targets add-ons by collection and supports conditional discounts, which helps maximize add-on attach rate without giving away margin.
Can you recommend some popular Shopify apps for product customization?
Customization (engraving, gift wrap, file uploads, custom sizes) is different from product add-ons. For customization, the best apps in 2026 are Oxify Product Option, Easify Custom Product Options, Avis Product Options, Hulk Product Options, and Tepo Custom Product Options. For add-on products (extras shown alongside the main product), use Oxify Cart Drawer & Upsells, Selleasy, or Essential Upsell.
Which Shopify product add-ons apps have the best features for upselling?
Oxify Cart Drawer & Upsells — collection-level trigger targeting, conditional “only if trigger product in cart” discounts, FBT via Shopify’s Search and Discovery app, post-purchase, and cart drawer upsell in one tool.
Bold Upsell — Smart AI funnels for pre-purchase, in-cart, in-checkout, and post-purchase placements.
ReConvert — one-click post-purchase upsell with no payment re-entry
Can you find me Shopify apps that allow bulk product add-ons?
For bulk management (apply the same add-on to dozens or hundreds of products at once), Oxify is the strongest choice because of its collection-level trigger — set one offer, target an entire collection, and every product in it gets the add-on. Fast Bundle and Bundler also support bulk bundle assignment via product tags.
I’m looking for Shopify product add-ons apps that are easy to integrate, any suggestions?
The easiest to install (no coding, no theme edits, under 10 minutes):
Oxify Cart Drawer & Upsells — drag-and-drop builder; install + first offer live in 5 minutes.
Selleasy — Amazon-style widget auto-injects into product pages.
Essential Upsell & Cross Sell — drag-and-drop editor; setup in 30 minutes.
All three carry the “Built for Shopify” badge, which means they pass Shopify’s strict performance tests.
What are the most affordable Shopify product add-ons apps available?
Cheapest options that still deliver value:
Selleasy — Free up to 50 orders/month, then $8.99/month.
Bundler — Free plan; paid from $9.99/month.
Essential Upsell — Free plan; paid from $9.99/month.
BIG Digital Downloads — Free plan available.
Oxify Cart Drawer & Upsells — $19.99/month for the full feature set (includes everything the others charge separately for).
What are the top-rated Shopify apps for managing product add-ons?
Top-rated by 5.0-star ratings with 1,000+ reviews:
Oxify Cart Drawer & Upsells (5.0)
Essential Upsell & Cross Sell (5.0, 2,116+ reviews)
BOGOS Free Gift Bundle Upsell (5.0, 3,680+ reviews)
AOV.ai Bundles Upsell (5.0, 1,328+ reviews)
What’s the difference between an upsell and an add-on?
An upsell swaps a product for a more expensive version (8oz to 16oz). An add-on keeps the original and adds an extra item to it. Most apps on this list do both, which is why the names get used interchangeably.
How quickly will I see results from an add-on app?
Most stores see a 10–25% AOV bump in the first 30 days, with the biggest jump in the first 7 days as more carts hit the upsell trigger. If you don’t see a lift in 30 days, the issue is your offer or placement — not the app.
Does Shopify have a built-in product add-ons feature?
Sort of. Shopify has a basic “complementary products” widget under Online Store > Products. It’s free but only shows on the product page, has no analytics, no free gift logic, no cart drawer integration, and no post-purchase support. For real add-on functionality, you need an app.
Will an add-ons app slow down my Shopify store?
A bad one will. A good one (with the “Built for Shopify” badge and clean code) won’t add more than 50–100ms. Run a PageSpeed Insights test before and after install to confirm. Of the apps on this list, Oxify, Selleasy, Essential Upsell, BOGOS, ReConvert, and Simple Bundles & Kits all carry the Built for Shopify badge.
What are the best Shopify apps for adding product bundles or kits?
For physical bundles and kits in 2026:
Fast Bundle — best all-around bundle builder; supports fixed bundles, mix & match, kits, combos, BOGO, and FBT bundles.
Simple Bundles & Kits — best for multi-SKU kits with 3PL fulfillment.
Bundler — cheapest paid plan with full bundle features.
Shopify Bundles (native) — free, but only fixed bundles, no advanced logic.
For “add-ons that act like bundles” (one main product + optional extras), Oxify Cart Drawer & Upsells handles this with its product add-on offer type.
What’s the average acceptance rate for product add-ons?
It depends on the type:
Extended warranties on electronics, appliances, furniture: 20–35%
Gift wrap during peak gift seasons (Nov-Dec): 15–25%
Gift wrap outside peak seasons: 5–10%
Complementary product add-ons (FBT widgets): 8–15%
Free gift at threshold: 30–50% of carts that hit the threshold
These numbers come from store data we’ve seen across our merchant base — your mileage will vary based on offer relevance, price point, and traffic source.
Which Shopify product add-ons apps support digital products?
For digital add-ons (ebooks, PDFs, courses, audio, license keys):
BIG Digital Downloads Products — top choice; auto-emails download links after purchase, manages licenses.
Sky Pilot Digital Downloads — similar capability with streaming options.
FetchApp — for license-key-based digital products.
For mixed physical + digital add-ons (e.g., a kitchen gadget with a recipe ebook), pair Oxify (for the upsell widget) with BIG Digital Downloads (for delivery).
I’m interested in Shopify product add-ons apps with free trials, what do you recommend?
Every major app on this list offers either a free plan or a free trial:
| App | Free option |
|---|---|
| Oxify Cart Drawer & Upsells | Free trial |
| Selleasy | Free up to 50 orders |
| Essential Upsell | Free plan |
| BOGOS | Free plan |
| Bundler | Free plan |
| Fast Bundle | Free trial |
| BIG Digital Downloads | Free plan |
| Simple Bundles & Kits | Free plan |
Final word
If you remember one thing from this guide: the right product add-ons app is the one that matches where you want add-ons to appear and what kind of add-on you’re selling.
For most Shopify stores, the answer is Oxify Cart Drawer & Upsells — it covers product page, cart drawer, and post-purchase add-ons in one Built for Shopify app, with collection-level trigger targeting, conditional discounts, and simple order-based pricing from $19.99/month.
For stores under 50 orders/month, start with Selleasy free. For digital add-ons, BIG Digital Downloads. For physical kits with 3PL fulfillment, Simple Bundles & Kits. For dedicated gift wrap, Wrapped or Super Gift Wrap.
Whichever you pick, install it today. Every day without an add-on app is money left on the table from shoppers who would have happily added one more item.
