Klevu ‑ AI Search & Discovery vs Mercury ‑ Personalise & Upsell
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 3, 2026 for Klevu, Oct 13, 2026 for Mercury.
The short answer
- On the Shopify App Store: Klevu 4.9 from 20 reviews and Mercury 5.0 from 3 reviews.
- Mercury lists 26 features Klevu’s listing doesn’t mention, including Announcement bar, Behavior insights, Bundles.
Head to head
Instant Search + Search based Recommendations & Merchandising
- 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.
Free
Collection only
- · 50 Merchandising Campaigns
- · Customized Filters per collection
- · Live Indexing
- · No Code Collection Grid
- · Plutocracy Integrations
Search & Merch
- · 3rd party Integrations
- · Adaptive Search Engine
- · Analytics Engine
- · Collection Grid Plan
- · No Limits Merchandising Engine
- · Personalisation Engine
Pro
- · API Access
- · Custom AI Models
- · Dedicated Account Manager
- · Free JUNO license
- · One way synonym engine
- · Search & Merch Plan
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featurePerfect for busy merchandising teams, Klevu advanced AI search and recommendations engine helps companies efficiently increase on-site search revenue. Plus, shoppers get personalized product recommendations, and are able to quickly find what they need through our filter and navigation features on product listing pages. Fully compatible with Shopify Markets.
Mercury is a no-code, drag-and-drop solution for delivering personalised product recommendations, upsells, and cross-sells. It enhances every step of the shopping journey, from product discovery to the cart. With AI-driven search and dynamic merchandising, Mercury ensures your store showcases the most relevant products at the right time, boosting conversions and AOV.
- Advanced AI search and merchandising that learns from your shoppers over time.
- Easy-to-use merchandising dashboard where you can test and schedule campaigns.
- Add advanced filtering to product listing pages and manage facets shown.
- Onsite Search, Merch & Recommendations fully compatible with Shopify Markets.
- AI Personalisation: Tailor product recommendations based on shopper behaviour
- Upsell & Cross-Sell Zones: Increase AOV with upsells from product pages to cart
- Dynamic Merchandising: Automatically display relevant products based on data
- Inline Banners: Scheduled banners (image/video) on grids & category pages
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 |  Klevu |  Mercury |
|---|---|---|
| Detected stores | 69 | Not published |
| Net store change, 28 days | +1 | 0 |
| Stores added, 28 days | 1 | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Apparel & Accessories, Food, Beverages & Tobacco, Home & Garden | Not published |
| Top store countries | United States, United Kingdom, Sweden | Not published |
Reviews
| Measure | Klevu | Mercury |
|---|---|---|
| App Store rating | 4.9 ★ | 5.0 ★(ahead) |
| App Store reviews | 20(ahead) | 3 |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
Klevu and Mercury: common questions
- Which has better reviews, Klevu or Mercury?
- On the Shopify App Store: Klevu 4.9 from 20 reviews and Mercury 5.0 from 3 reviews.
- What features does each app list that the other doesn’t?
- Klevu lists 1 the others don’t mention, such as Multi-language. Mercury lists 26 the others don’t mention, such as Announcement bar, Behavior insights, Bundles, Cart drawer. 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 3, 2026 for Klevu, Oct 13, 2026 for Mercury; 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 3, 2026 for Klevu, Oct 13, 2026 for Mercury. 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.