Tweakday: Auto Add‑ons & Fees
Free planAuto-attach fees, warranties & free gifts to specific products at checkout. Per item. Quantity scales. No code. No Plus needed. Free plan available.





Merchant Reviews
30-Day Trends
Category Rankings
- Category
Marketing and conversion apps > Checkout > Cart customization apps
Add a "buy now" button, sticky add to cart, or whatever else helps customers complete their purchase.
Rank: 102 / 546
Last seen 2026-09-26
- Category
Marketing and conversion apps > Checkout
Make checkout the easiest part of your shopping experience.
Rank: 303 / -24
Last seen 2026-09-25
Rank: 58 / 378
Last seen 2026-09-26
Rank: 16 / 28
Last seen 2026-09-25
Collection Rankings
Rank: 1290 / -24
Last seen 2026-09-25
- Collection
These apps have cleared Shopify’s highest quality bar for safety, performance, and usefulness.
Rank: 1423 / -24
Last seen 2026-09-25
Rank: 1293 / -24
Last seen 2026-09-25
Rank: 1299 / -24
Last seen 2026-09-27
Rank: 1300 / -24
Last seen 2026-09-27
Rank: 1289 / -24
Last seen 2026-09-25
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