--- title: "RS: Cart Upsell & Cross Sell vs SellUp: Add‑ons & Cart Upsell: Shopify app comparison" description: "Compare RS: Cart Upsell & Cross Sell and SellUp: Add‑ons & Cart Upsell on detected Shopify stores, App Store reviews, pricing, listed features and integrations." canonical_url: "https://shoplist.co/shopify-apps/compare/rs-cart-upsell-cross-sell-vs-sellup-upsell-add-ons" markdown_url: "https://shoplist.co/shopify-apps/compare/rs-cart-upsell-cross-sell-vs-sellup-upsell-add-ons.md" data_as_of: "Nov 11, 2026" --- # RS: Cart Upsell & Cross Sell vs SellUp: Add‑ons & Cart Upsell Shopify app comparison from Shoplist. Store counts as of Nov 11, 2026. ## At a glance - SellUp is detected on 7.5× as many Shopify stores as RS: 768 vs 103 as of Nov 11, 2026. - On the Shopify App Store: RS 5.0 from 7 reviews and SellUp 4.4 from 133 reviews. - SellUp lists 13 features RS’s listing doesn’t mention, including AI recommendations, Custom HTML, Custom rules. ## Adoption | Measure | RS | SellUp | Ahead | | --- | --- | --- | --- | | Detected stores | 103 — as of Nov 11, 2026 | 768 — as of Nov 11, 2026 | SellUp | | Net store change, 28 days | \+5 — estimated | −11 — estimated | | | Stores added, 28 days | 5 — new and returning | 20 — new and returning | SellUp | | Big-brand share | Not enough data | 11% — of stores of known size | | | Top store categories | Apparel & Accessories, Health & Beauty, Home & Garden | Apparel & Accessories, Home & Garden, Health & Beauty | | | Top store countries | Hungary, United Kingdom, United States | United States, United Kingdom, Australia | | ## Reviews | Measure | RS | SellUp | Ahead | | --- | --- | --- | --- | | App Store rating | 5.0 ★ | 4.4 ★ | RS | | App Store reviews | 7 | 133 | SellUp | | New reviews, 28 days | Not enough data | 0 | | | Reviewers a year or more in | Not enough data | Not enough data | | ## Pricing | Measure | RS | SellUp | Ahead | | --- | --- | --- | --- | | Free plan | Not listed | Not listed | | | Lowest paid monthly plan | No monthly plan listed | $14.99/month | | | Longest free trial | Not listed | Not listed | | | Plans listed | Not published | 2 | | ## Listing | Measure | RS | SellUp | Ahead | | --- | --- | --- | --- | | Shopify category rank | \#98 — in Upsell and cross-sell | \#248 — in Upsell and cross-sell | RS | | Shopify App Charts | \#7 on Rookies in Upsell and cross-sell | Not on this week’s charts | | | Built for Shopify | Yes | No | | | Launched | Aug 18, 2026 | Apr 26, 2019 | | | Languages | 1 — English | 1 — English | | | Developer | Rapid Search | LAUNCHTIP | | ## Listed features - 31 distinct features are listed across these App Store listings; 9 are listed by both. - RS lists 18 of them (58%). Listed only by RS: Cart drawer, Checkout upsell, Custom CSS, Frequently bought together, Multi-language, One-click upsell, Product recommendations. - SellUp lists 22 of them (71%). Listed only by SellUp: AI recommendations, Custom HTML, Custom rules, Frequently bought together, Gift wrap, Multi-currency, One-click add-ons, Priority processing, Product page upsell, Shipping protection, Subscription upgrade, Thank you page upsell, Warranties. ### Coverage by App Store category | Category | RS | SellUp | | --- | --- | --- | | Cart customization | 6/6 | 0/6 | | Cart customization › Cart display | 2/2 | 0/2 | | Cart customization › Checkout customization | 2/2 | 0/2 | | Cart customization › Upselling | 2/2 | 0/2 | | Upsell and cross-sell | 12/25 | 22/25 | | Upsell and cross-sell › Analytics | 4/4 | 4/4 | | Upsell and cross-sell › Customization | 6/12 | 9/12 | | Upsell and cross-sell › Offers and recommendations | 2/9 | 9/9 | A feature missing from a listing may still be supported; this compares what each App Store listing says. ## Integrations - No platform appears in every listing. - RS lists no integrations. - Only SellUp lists: Checkout, Customer accounts. ## Pricing plans ### RS Free ### SellUp | Plan | Price | Free trial | Additional charges | | --- | --- | --- | --- | | Free Tier | Free to install | Not listed | 0% commission on sales. Charges apply over 500 monthly Upsell views. | | Getting Started | $14.99/month | Not listed | 0% commission on sales. Additional plans available. See our pricing page for details. | ## Frequently asked questions ### Which is more popular, RS or SellUp? SellUp is detected on 7.5× as many Shopify stores as RS: 768 vs 103 as of Nov 11, 2026. ### Which has better reviews, RS or SellUp? On the Shopify App Store: RS 5.0 from 7 reviews and SellUp 4.4 from 133 reviews. ### What features does each app list that the other doesn’t? RS lists 7 the others don’t mention, such as Cart drawer, Checkout upsell, Custom CSS, Frequently bought together. SellUp lists 13 the others don’t mention, such as AI recommendations, Custom HTML, Custom rules, Frequently bought together. 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 Nov 11, 2026; estimated figures are labeled. ## Links - [RS: Cart Upsell & Cross Sell vs SellUp: Add‑ons & Cart Upsell on Shoplist](https://shoplist.co/shopify-apps/compare/rs-cart-upsell-cross-sell-vs-sellup-upsell-add-ons) - [RS: Cart Upsell & Cross Sell on Shoplist](https://shoplist.co/shopify-apps/rs-cart-upsell-cross-sell) ([Markdown](https://shoplist.co/shopify-apps/rs-cart-upsell-cross-sell.md)) - [SellUp: Add‑ons & Cart Upsell on Shoplist](https://shoplist.co/shopify-apps/sellup-upsell-add-ons) ([Markdown](https://shoplist.co/shopify-apps/sellup-upsell-add-ons.md)) ## Methodology 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 for RS and SellUp are as of Nov 11, 2026. “Not detectable from storefronts” means an app leaves no storefront trace, so Shoplist can’t count its stores. A row names who is ahead only when every app has a measured, unestimated figure. See [data methodology](https://shoplist.co/data-methodology.md).