Checkify ‑ Customize Checkout vs Post Purchase Upsell—ReSell
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of May 12, 2026 for Checkify, Nov 7, 2026 for Post Purchase Upsell—ReSell.
The short answer
- Post Purchase Upsell—ReSell lists 9 features Checkify’s listing doesn’t mention, including A/B testing, AI recommendations, Drag-and-drop editor.
Head to head
- United States
- United Kingdom
- Australia
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Flex
- · 100 store orders free/mo
- · 24/7 chat, email, phone & video calls
- · 5% on upsell revenue
- · Free cart upsell add-on
Standard
- · 24/7 chat, email, phone & video calls
- · 250 store orders included/mo
- · Commission-free upsells
- · Free cart upsell add-on
- · Then $0.20 per order
Professional
- · 1,000 store orders included/mo
- · 24/7 chat, email, phone & video calls
- · Commission-free upsells
- · Free cart upsell add-on
- · Then $0.20 per order
Unlimited
- · 24/7 chat, email, phone & video calls
- · Commission-free upsells
- · Free cart upsell add-on
- · Lifetime price lock
- · No usage charges ever
- · Unlimited store orders
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSay goodbye to checkout limitations! With our app, you can easily add custom text fields to your checkout page, allowing customers to leave special instructions, gift messages, or any other personalized information. Make upselling a breeze! Showcase complementary products on the checkout page, encouraging customers to add those last-minute items to their cart before completing their purchase.
Get an ultimate sales boost by reconverting buyers after payment: a post purchase offer before the thank you page, upsell bundles on the checkout page, upsell & cross sell with related products and recommended products. A post checkout upsell and order status page upsell keep selling, and a multi-product downsell follows a declined offer.
- Custom Text Fields - Add custom text fields to your checkout page
- Dynamic Product Upsells - Showcase complementary product upsells on the checkout
- Mobile Optimised - Automatically resizes to work on all display sizes
- No Coding Required - Instantly customize your checkout in seconds.
- Checkout and post-purchase one click upsell and automatic cross-sell offers
- Offer customers to make a new purchase with Thank you page upsell promotions
- Upselling and cross-selling widgets to improve your checkout and Thank you page
- Personalized recommendations or products that are frequently bought together
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 |  Checkify |  Post Purchase Upsell—ReSell |
|---|---|---|
| Detected stores | Not published | 48 |
| 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 | Apparel & Accessories, Health & Beauty, Home & Garden |
| Top store countries | Not published | United States, United Kingdom, Australia |
Reviews
| Measure | Checkify | Post Purchase Upsell—ReSell |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 71 |
| New reviews, 28 days | Not enough data | 1 |
| Reviewers a year or more in | Not enough data | 32% |
Pricing
| Measure | Checkify | Post Purchase Upsell—ReSell |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | No monthly plan listed | $0.99/month |
| Longest free trial | Not listed | 30 days |
| Plans listed | Not published | 4 |
Listing
| Measure | Checkify | Post Purchase Upsell—ReSell |
|---|---|---|
| Shopify category rank | Not enough data | #81 |
| Shopify App Charts | Not on this week’s charts | #20 on Featured by Shopify in Upsell and cross-sell |
| Built for Shopify | No | Yes |
| Launched | Sep 27, 2023 | Jun 28, 2022 |
| Languages | 1 | 4 |
| Developer | EcomDev | DevIT |
FAQ
Checkify and Post Purchase Upsell—ReSell: common questions
- What features does each app list that the other doesn’t?
- Checkify lists 2 the others don’t mention, such as Cart upsell, Recommendation performance. Post Purchase Upsell—ReSell lists 9 the others don’t mention, such as A/B testing, AI recommendations, Drag-and-drop editor, Free shipping. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- 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 May 12, 2026 for Checkify, Nov 7, 2026 for Post Purchase Upsell—ReSell; 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 May 12, 2026 for Checkify, Nov 7, 2026 for Post Purchase Upsell—ReSell. 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.