Kairo ‑ Post Purchase Upsell vs UpsellPlus Checkout Upsell
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 26, 2026 for Kairo, Nov 10, 2026 for UpsellPlus Checkout Upsell.
The short answer
- On the Shopify App Store: Kairo 5.0 from 4 reviews and UpsellPlus Checkout Upsell 5.0 from 151 reviews.
- Both list a free plan. Paid plans start at $8/month for Kairo and $49/month for UpsellPlus Checkout Upsell.
- UpsellPlus Checkout Upsell lists 10 features Kairo’s listing doesn’t mention, including AI recommendations, Announcement bar, Cart drawer.
Head to head
Grow AOV, post-purchase, BOGO, offers, funnels, gifts
- United States
- United Kingdom
- Sweden
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Development Stores
- · All features included
- · For development & partner stores
Unlimited
- · 13 upsell page templates
- · A/B tests for offers & whole flows
- · AI setup builds your offers & flows
- · Checkout customization (Shopify Plus)
- · One-click upsells & downsells
- · Surveys with discount code rewards
Free
- · Analytics
- · Build for free. Launch with a free trial
- · Checkout Upsells (Plus only)
- · Choose from all 12 upsell types
- · Product, Cart, Post-purchase upsells
Launch
- · Cart Page, Pop-up & Drawer Upsells
- · Earn back fees with UpsellPlus Earn
- · Free Gifts
- · Multivariate A/B testing
- · Post-purchase Upsells
- · Product Page Upsells
Shopify Plus
- · AI recommendations
- · Checkout Customization
- · Checkout Upsells
- · Earn back fees with UpsellPlus Earn
- · Everything in Basic, plus:
- · Thank You Page Customizations
Scale
- · Checkout & TY page Customization
- · Checkout Upsells
- · Earn back fees with UpsellPlus Earn
- · Everything in Basic, plus:
- · Live support with 30s replies
- · Multivariate A/B Testing
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureKairo's AI reads your store and builds post-purchase upsell offers in 3 minutes, tailored to your products. No manual setup, and nothing goes live until you say so. Buyers accept one-click upsells after checkout, no card re-entry, and a downsell (cheaper offer) can follow a "no". Target flows by product, order value or customer, and A/B test them to see which earns more.
UpsellPlus helps increase average order value with personalized upsells and cross sells across product pages, cart drawers, checkout, post purchase, thank you, order status and customer account pages. Staff can also upsell in store with offers on the Shopify POS home screen, added in one tap. Create one click post purchase offers, free gifts, subscription upgrades and checkout customizations.
- One-click post-purchase upsell and downsell offers with discount options
- Flow builder with conditions, branching logic, and A/B testing
- Checkout (Shopify Plus), thank you, and order status page customization
- Visual drag-and-drop editor with 14 templates and 27+ block types
- Customize checkout, cart and post-purchase page with upsells and customizations
- Upsell one-off purchases to subscriptions to grow your recurring revenue
- Add custom fields to checkout page for gift message, delivery date/notes
- A/B test checkout upsells to learn what works best
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 |  Kairo |  UpsellPlus Checkout Upsell |
|---|---|---|
| Detected stores | Not published | 113 |
| Net store change, 28 days | 0 | +14 |
| Stores added, 28 days | Not enough data | 16 |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories, Health & Beauty, Food, Beverages & Tobacco |
| Top store countries | Not published | United States, United Kingdom, Sweden |
Reviews
| Measure | Kairo | UpsellPlus Checkout Upsell |
|---|---|---|
| App Store rating | 5.0 ★ | 5.0 ★ |
| App Store reviews | 4 | 151(ahead) |
| New reviews, 28 days | Not enough data | 6 |
| Reviewers a year or more in | Not enough data | 11% |
Pricing
| Measure | Kairo | UpsellPlus Checkout Upsell |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $8/month(ahead) | $49/month |
| Longest free trial | 14 days | 14 days |
| Plans listed | 2 | 4 |
Listing
| Measure | Kairo | UpsellPlus Checkout Upsell |
|---|---|---|
| Shopify category rank | #207 | #22 |
| Shopify App Charts | Not on this week’s charts | #10 in Checkout - Other |
| Built for Shopify | No | Yes |
| Launched | May 19, 2026 | Nov 3, 2021 |
| Languages | 1 | 1 |
| Developer | Kairo | UpsellPlus |
FAQ
Kairo and UpsellPlus Checkout Upsell: common questions
- Is Kairo or UpsellPlus Checkout Upsell cheaper?
- Both list a free plan. Paid plans start at $8/month for Kairo and $49/month for UpsellPlus Checkout Upsell. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, Kairo or UpsellPlus Checkout Upsell?
- On the Shopify App Store: Kairo 5.0 from 4 reviews and UpsellPlus Checkout Upsell 5.0 from 151 reviews.
- What features does each app list that the other doesn’t?
- Kairo lists 6 the others don’t mention, such as Bundles, Custom rules, Drag-and-drop editor, Quantity breaks. UpsellPlus Checkout Upsell lists 10 the others don’t mention, such as AI recommendations, Announcement bar, Cart drawer, Cart upsell. 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 Oct 26, 2026 for Kairo, Nov 10, 2026 for UpsellPlus Checkout Upsell; 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 26, 2026 for Kairo, Nov 10, 2026 for UpsellPlus Checkout Upsell. 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.