Which? vs Sainsbury's
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Which?
This app provides expert reviews and price comparisons for thousands of products and services to help UK consumers shop smarter. Access digital magazine issues with full membership for the latest consumer advice and news, all available offline.
- Expert product and service reviews
- Price comparison and availability checks
- Product specification and test result comparison
- Customer ratings and expert verdicts
- Digital issues of Which? Magazine
- Offline access to reviews and magazines
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The Which? app helps UK consumers shop smart and sustainably with 1,000s of expert reviews. Plus, with full membership, you can access digital issues of our flagship magazine to stay on top of the latest consumer advice and news. Shopping is made easy for you with the latest product and service reviews. Compare prices, product specs, test results and customer ratings, and see our expert verdicts on whether products are Best Buys or Don’t Buys. Once you’ve downloaded the Which? app, you can access our reviews and magazine issues – anytime, anywhere, including offline. • Get the best deal – compare prices and check availability. • Filter by price, features, test results and recommended products. • Shortlist and compare product features and test results. • With full membership, you can read digital issues of Which? Magazine. Why do our users love the new Which? App? • It’s a time saver - no need to trawl the internet looking for the best product reviews. • You can check product reviews and prices instantly when out shopping. • Trusted independent reviews of a huge range of products with pros and cons. • Easy navigation enables you to compare products and prices side by side. • You can easily sort the Best Buys from the Don’t Buys. Feedback and support: Share your reviews of the Which? app on the App Store and via app@which.co.uk Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Your Which? membership through Apple In-App Purchase: https://www.which.co.uk/help/your-which-membership-through-apple-in-app-purchase-aoVxP9t7ifLK
Sainsbury's
Shop for over 30,000 grocery products from your phone. Browse, search, create orders, and collect rewards. Choose home delivery or in-store collection across the UK.
- Browse and search 30,000+ products
- Create and edit grocery orders
- Link Nectar card for rewards
- Access offers and deals
- UK-wide home delivery
- Click & Collect from stores
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Save time. Save money. Shop your way. The Sainsbury’s app brings together everything you need to shop with Sainsbury’s, whether you’re planning your weekly shop, shopping in-store, collecting Nectar rewards or getting groceries delivered fast. With the Sainsbury’s app you can: • Shop groceries online and book delivery or Click & Collect slots • Unlock personalised offers, Nectar Prices and rewards • Use SmartShop to scan as you shop and stay in control of your spend • Create shopping lists and save favourites for quicker repeat shops • Get groceries delivered in as little as 60 minutes with Chop Chop • Find products and locate them in selected stores with Search Your Store One app. Multiple ways to shop.
Screenshots
Verdict
The clearest difference is in-app purchases: Sainsbury's at none against Which?'s 2. Sainsbury's also leads on rating (4.8 vs 4.5) and ratings volume (765 vs 41). Which?'s advantage is ads (none vs shown). On price, review sentiment, update cadence and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Which? sells 2 in-app purchases, starting at $4.49 per month. Sainsbury's asks for nothing beyond the download.
Sainsbury's holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Sainsbury's has 765 ratings behind it against 41, so its average is the more settled of the two. Written reviews complicate that: 35% of Which?'s written reviews are positive against 30% of Sainsbury's's, so the app with the better star average is not the one people write more warmly about.
Which? ships an update weekly, Sainsbury's every 2 weeks. The most recent releases landed on October 18, 2026 and October 19, 2026 respectively.
| Parameter | Which? | Sainsbury's |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (41 ratings) | 4.8 (765 ratings) — better |
| Positive reviews | 35.1% of reviews — better | 29.5% of reviews |
| Number of ratings | 41 | 765 — better |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 85 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | Which? Limited | Sainsbury's |
Customer experience
Which?
Sainsbury's
User reviews
Which?
From 41 App Store ratingsWhat we love
- 👍 Trusted, independent consumer reviews and testing
- 💰 Saves money on purchasing decisions
- 🔍 Comprehensive product comparison information
- 📱 Convenient access to reviews on-the-go
- 📚 Extensive coverage of consumer products
Room to improve
- 🐢 App extremely slow and laggy
- 🔐 Constant forced re-login issues
- 🐛 Frequent blank page errors
- ❌ Poor search functionality
- 🧭 Inconsistent and confusing navigation
Sainsbury's
From 765 App Store ratingsWhat we love
- 👍 Convenient shopping
- 👍 Easy to use app
- 👍 Excellent delivery service
- 👍 Friendly and helpful delivery drivers
- 👍 Great for online shopping
Room to improve
- 🐛 App crashes and glitches
- 🐛 Unavailable items and substitution issues
- 🐛 Difficulty logging in and accessing account
- 🐛 Checkout and payment problems
- 🐛 Missing or unreliable features
Bugs and requests
Which?
Reported bugs
16 issues- App hangs on login screen
- Blank white pages when loading articles
- Login loop - constantly asks to re-authenticate
- Search returns no results or incomplete results
- Back button unresponsive or overly laggy
Show 11 moreShow fewer
- Multiple taps on back button cause navigation errors
- App crashes when changing portrait/landscape orientation
- Offline error message despite active internet connection
- Filters reset when returning to product list
- Pages fail to load or load very slowly
- Broken links in articles and categories
- App freezes during login pop-ups
- Saved items disappear after app updates
- Session not maintained when redirected to website
- Autofill not recognized on username field
- App doesn't remember previous page when returning
Requested features
13 requests- Dark mode for app interface
- Remember login credentials/autofill support
- Persistent session management
- Advanced filtering and sorting options
- Ability to compare more than two products
Show 8 moreShow fewer
- Magazine article indexing and search
- Landscape mode for magazine reading
- Sync saved items between app and website
- Notifications for new reviews in categories
- Better iPad screen utilization
- Improved search with suggestions
- Accessibility improvements for screen readers
- In-app subscription option via Apple Pay
Sainsbury's
Reported bugs
6 issues- App crashes during checkout
- Unable to add payment methods
- Nectar card integration issues
- Delivery address changes unexpectedly
- Items disappearing from basket
Show 1 moreShow fewer
- Incorrect pricing and unavailable offers
Requested features
6 requests- Add notes for item substitutions
- Improve search and browsing experience
- Integrate Nectar card and points management
- Provide delivery tracking and status updates
- Allow saving and reordering of previous orders
Show 1 moreShow fewer
- Improve app stability and reduce crashes
In-app purchases
Which?
- Which? Reviews$4.491 Month
- Reviews Plus (discontinued)$5.491 Month
Sainsbury's
No in-app purchases
