Cart & Upsell by Navidium vs SellUp: Add‑ons & Cart Upsell
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 9, 2026.
The short answer
- SellUp is detected on 39× as many Shopify stores as Cart & Upsell by Navidium: 697 vs 18 as of Nov 9, 2026.
- On the Shopify App Store: Cart & Upsell by Navidium 5.0 from 3 reviews and SellUp 4.4 from 133 reviews.
- SellUp lists 12 features Cart & Upsell by Navidium’s listing doesn’t mention, including Click-through rates, Conversion rates, Custom CSS.
Head to head
Cross-sell, Upsell, funnels, Add On, Recommendations & Cart.
- United States
- United Kingdom
- France
- 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.
Freedom
- · A/B Testing
- · AI recommendation
- · Clean and Fast upsell UI
- · In Depth analytics
- · Live Chat support
- · One click Funnel creation
Free Tier
- · AI On Page Upsell
- · Action Upsell
- · Analytics
- · Basic Support
- · Cart Upsell
- · Post Purchase
Getting Started
- · AI On Page Upsell
- · Action Upsell
- · Analytics
- · Cart Upsell
- · Post Purchase
- · Premium Support
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCart and Upsell by Navidium is a full-featured upsell engine designed to help Shopify merchants help AOV+ through personalized post-purchase offers, single -click upsells, and AI-optimized funnels. Whether you’re just starting or scaling, our platform adapts to your growth. It helps you build highly-converting funnels in minutes—without code.
Looking to maximize revenue? With SellUp, you can create precision based cross-sells, upsells, product accessories, shop the look & add-ons for your store. From the product page through to the cart & thank you page, you can offer the best upsell & product add-on flow throughout the customer journey. SellUp will match your stores design so upsells look seamless.
- AI-Powered Funnels - Auto-generate your first upsell funnel in seconds
- Post-Purchase & Thank You Page Offers - targeted upsells just after checkout
- Advanced Analytics Dashboard - track funnel performance, upsell revenues
- Create cross-sells, upsells and add-ons to increase revenue across your store
- Offer add ons and upsells throughout the customer journey
- Create One Check Upsells in 60 seconds. Sell more with SellUp
- Create a frequently bought together section to increase average order value
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 |  Cart & Upsell by Navidium |  SellUp |
|---|---|---|
| Detected stores | 18 | 697(ahead) |
| Net store change, 28 days | 0 | −13 |
| Stores added, 28 days | 1 | 14(ahead) |
| Big-brand share | Not enough data | 11% |
| Top store categories | Health & Beauty, Electronics, Food, Beverages & Tobacco | Apparel & Accessories, Home & Garden, Health & Beauty |
| Top store countries | United States, United Kingdom, France | United States, United Kingdom, Australia |
Reviews
| Measure | Cart & Upsell by Navidium | SellUp |
|---|---|---|
| App Store rating | 5.0 ★(ahead) | 4.4 ★ |
| App Store reviews | 3 | 133(ahead) |
| New reviews, 28 days | Not enough data | 0 |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Cart & Upsell by Navidium | SellUp |
|---|---|---|
| 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 | 1 | 2 |
Listing
| Measure | Cart & Upsell by Navidium | SellUp |
|---|---|---|
| Shopify category rank | #305 | #248(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 25, 2025 | Apr 26, 2019 |
| Languages | 1 | 1 |
| Developer | Navidium Apps | LAUNCHTIP |
FAQ
Cart & Upsell by Navidium and SellUp: common questions
- Which is more popular, Cart & Upsell by Navidium or SellUp?
- SellUp is detected on 39× as many Shopify stores as Cart & Upsell by Navidium: 697 vs 18 as of Nov 9, 2026.
- Which has better reviews, Cart & Upsell by Navidium or SellUp?
- On the Shopify App Store: Cart & Upsell by Navidium 5.0 from 3 reviews and SellUp 4.4 from 133 reviews.
- What features does each app list that the other doesn’t?
- Cart & Upsell by Navidium lists 2 the others don’t mention, such as Checkout upsell, Volume discounts. SellUp lists 12 the others don’t mention, such as Click-through rates, Conversion rates, Custom CSS, Custom HTML. 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 9, 2026; 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 Nov 9, 2026. 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.