AddUp Checkout Customizer
Free trialAddUp helps you customize Shopify checkout with rules, discounts, upsells, shipping and payment controls, validation, and branded experiences.





Merchant Reviews
30-Day Trends
Category Rankings
- Category
Marketing and conversion apps > Checkout
Make checkout the easiest part of your shopping experience.
Rank: 322 / 494
Last seen 2026-08-17
- Category
Marketing and conversion apps > Upsell and bundles > Upsell and cross-sell apps
Tempt them with upgrades, “pairs well with,” and other hard-to-resist items.
Rank: 468 / 1051
Last seen 2026-08-17
Rank: 169 / 350
Last seen 2026-08-17
Collection Rankings
Rank: 2820 / 5257
Last seen 2026-08-17
Rank: 2819 / -24
Last seen 2026-08-17
- Collection
Apps for extending your customer accounts
Supercharge the account experience so customers can do more when they log in.
Rank: 906 / 1472
Last seen 2026-08-17
Rank: 2820 / -24
Last seen 2026-08-17
Rank: 2819 / -24
Last seen 2026-08-17
Rank: 2820 / 5260
Last seen 2026-08-17
- Collection
Apps for extending your customer accounts
Supercharge the account experience so customers can do more when they log in.
Rank: 904 / -24
Last seen 2026-08-18
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