CheckIt: Checkout Progress Bar vs ExtensionKit ‑ Custom Checkout
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for CheckIt, Oct 14, 2026 for ExtensionKit.
The short answer
- On the Shopify App Store: CheckIt 5.0 from 1 reviews and ExtensionKit 5.0 from 2 reviews.
Head to head
Free
Startup
- · Advanced discount
- · Cart validations
- · Checkout branding editor
- · Content and upsell checkout extensions
- · Email support
Small Business
- · Advanced discount
- · Cart validations
- · Checkout branding editor
- · Content and upsell checkout extensions
- · Live chat + email support
Growth
- · Advanced discount
- · Cart validations
- · Checkout branding editor
- · Content and upsell checkout extensions
- · Slack + live chat + email support
Enterprise
- · Advanced discount
- · Cart validations
- · Checkout branding editor
- · Content and upsell checkout extensions
- · Slack + live chat + email support
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureShow customers how close they are to completing a purchase by displaying a progress bar during checkout. Incorporating game-like aspects like a progress bar to your checkout, gives users the confidence to complete checkout because they know the end is in sight! Shopify Plus & Checkout Extensibility required.
Unlock the full potential of your Shopify checkout with Extension Kit. Generate revenue with product upsells and subscription upgrades, and collect additional information from customer's with custom fields. Easily customize checkout pages using drag-and-drop blocks for banners, images, and informational text. Customizable for all of your customer's with Shopify Markets.
- Add a progress bar to your checkout to improve engagement and drive conversions!
- Customize all settings within the theme editor; see your changes live!
- Design your own progress bar; adjust placement, size, color, and more!
- Checkout product upsells, subscription upgrades, banners, custom fields & more
- Create tiered product or order discount promotions
- Schedule blocks and discounts for timed promotions
- Limit quantity of items in the cart
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  CheckIt |  ExtensionKit |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | CheckIt | ExtensionKit |
|---|---|---|
| App Store rating | 5.0 ★ | 5.0 ★ |
| App Store reviews | 1 | 2(ahead) |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | CheckIt | ExtensionKit |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | No monthly plan listed | $19.99/month |
| Longest free trial | Not listed | 14 days |
| Plans listed | 1 | 4 |
Listing
| Measure | CheckIt | ExtensionKit |
|---|---|---|
| Shopify category rank | #232 | Not enough data |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 19, 2023 | Sep 18, 2024 |
| Languages | 1 | 1 |
| Developer | Fractal Apps | Maverick Apps |
FAQ
CheckIt and ExtensionKit: common questions
- Which has better reviews, CheckIt or ExtensionKit?
- On the Shopify App Store: CheckIt 5.0 from 1 reviews and ExtensionKit 5.0 from 2 reviews.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for CheckIt, Oct 14, 2026 for ExtensionKit; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for CheckIt, Oct 14, 2026 for ExtensionKit. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.