Tweakday: Checkout Kit

Checkout add-ons, fees and rules that work on all store...

by Tweakday · Launched: April 2024 · Free plan available.

5.0 (5) on Shopify Built for Shopify

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Auto-attach fees, warranties & gifts to products at checkout. All plans.No code.

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About Tweakday: Checkout Kit

Tweakday auto-attaches fees, warranties, insurance, and free gifts to specificproducts at checkout — based on rules you set. Sell a phone, a warranty attaches. Sell afragile item, a handling fee adds. Per item, not per order. Quantity scales automatically.Multiple add-ons per product. Update bundle title and image at checkout. No widgets. Notheme edits. No Shopify Plus needed. Free or paid add-ons. Auto-creates virtual productsfor insurance or warranties — no manual setup. Auto-attach multiple fees, warranties & add-ons to specific products at checkout Quantity scales automatically — 1:1 by default or set your own ratio per add-on Auto-creates virtual warranty/insurance products — no manual setup needed Update parent title & image — looks like a bundle, fulfils separately No code, no theme edits, no Shopify Plus — works on all plans Show more Show less

Last verified: July 16, 2026 · Fresh

App details

Developer: Tweakday
Category: Marketing & conversion
Pricing: Free plan available
Launched: April 2024
Rating: 5.0 (5) on Shopify

Key features

Order Protection, Delivery & Payment
Basic checkout control
Custom Templates
Standard Support
Add-ons & Pricing

Integrations with:

Checkout, Shopify Admin

2 plans · starts free · 7-day free trial

Free Plan

Free

Pro Plan

$24.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 8 Shopify App Store reviews

Use the arrows to read individual reviews

I cant tell you how much this app has solved a problem i had instantly. Saved me alot of money as well. Most developers were asking me to pay for shopify plus. Bharat was very helpful and instantly solved the issue i had in my checkout. I really appreciate and highly recommend the app.

— HAWTHONS

Bharat has been great giving me support on setting this app. Even went extra mile and create new feature that would align to my store needs.

— Proven Part

Very user-friendly app that absolutely fulfills its purpose. We highly recommend it.

— Carrera

Tweakday Checkout has a very clear and intuitive UI. Within just a few minutes we were able to set up checkout rules, adjust the order of payment methods, and even customize the names of payment methods. These are features that Shopify does not provide out of the box, but this app makes them possible, even in the free version. We compared it with five other checkout rules apps, but either they di...

— Kingspan store België | Branddetectie | Kingspan Light + Air Belgium nv

I had been looking for a simple checkout validation app to display an error message on specific checkout fields for certain countries for ages..tried many, but they either didnt function well or required Shopify Plus accounts. I was so happy to find Tweakday Checkout! I had a small issue with display on my theme, but support (from Baharat) was fantastic, and their UI is super simple and intuitive...

— House of Habanero

Great app for customizing Shopify checkouts with multiple conditions available

— Mysmallbusiness SuperStore

The app's UI is clean and user-friendly. I used the Delivery Customization feature and was able to easily manage my shipping with multiple options. It’s a great tool for streamlining the checkout process!

— Frozeo