Verified July 2026
We tested 26 apps to find the best Shopify apps for cart, email, reviews, upsells, loyalty and subscriptions. These eight are the stack most stores need.
Swipe for the list →
01
Cart & checkout
Best overall cart app
A slide cart with in-cart upsells, free gifts, BOGO and a reward progress bar — plus post-purchase and thank-you-page offers. Built for Shopify.
Built by Oxify
02
Email & SMS
The gold standard
Deep Shopify data, segmentation and flows that carry most stores' retention revenue. Costs climb with list size, so prune inactive contacts.
03
Reviews
Best free review app
Unlimited review requests, photo and video reviews, and rich-snippet markup on the free plan. There is no reason to launch without it.
04
Bundles & AOV
Best for volume discounts
Buy-more-save-more tiers, mix-and-match and BOGO on the product page. Works on the native cart, so no theme surgery is required.
Built by Oxify
05
Post-purchase
Best thank-you page upsell
One-click offers after checkout that add revenue without touching your conversion rate — the buyer has already paid.
06
Loyalty
Best loyalty program
Points, referrals and VIP tiers that install in an afternoon. Worth adding once repeat purchase rate is the number you are trying to move.
07
Subscriptions
Best subscription app
Native Shopify subscriptions with build-a-box, prepaid plans and dunning. The most generous free tier in the category.
08
Automation
Free — and replaces paid apps
Tag high-value customers, flag fraud, restock alerts, reorder reminders. Free on every plan and quietly the highest-ROI app on this list.
The best Shopify apps earn their keep. Install for a clear revenue job, keep the stack under 15, audit quarterly, and uninstall what you cannot measure.