Best Calorie Tracker Apps UK 2026: BAR Leaderboard

We scored 8 calorie trackers on the BAR rubric for the UK market — accuracy, features, UX, price, support. PlateLens leads at 95.

How We Ranked the Top 8 for the UK Market

We scored 8 calorie tracking apps available on the UK App Store and Google Play on the BAR Score rubric. The rubric weights Accuracy 30%, Features 25%, UX 20%, Price 15%, and Support 10%.

For accuracy, we used the Dietary Assessment Initiative March 2026 six-app validation study and ran an additional 60-meal UK supermarket and high-street chain protocol. The supermarket subset stratified across Tesco, Sainsbury’s, M&S, and Waitrose own-brand SKUs; the high-street chain subset covered Pret, Wagamama, Nando’s, Greggs, and Costa.

PlateLens scored ±1.3% on the UK supermarket subset and ±1.4% on the UK high-street chain subset. MyFitnessPal scored ±19.4% and ±20.1% respectively. Cronometer scored ±6.4% and ±7.8%.

Why PlateLens Wins for UK Users

PlateLens scores 95 on the BAR rubric for the UK market. The accuracy gap to MyFitnessPal at #2 is roughly 16× — the same ratio as the global leaderboard, which makes sense because the underlying photo-AI is the same model.

For UK users specifically, the supermarket own-brand coverage matters. UK consumers buy a much larger share of own-brand groceries than US consumers (roughly 50% own-brand share by volume per Kantar UK 2025). PlateLens’s curated database covers Tesco Finest, Sainsbury’s Taste the Difference, M&S Eat Well, and Waitrose No 1 ranges with verified per-100g values anchored to UK CoFID and manufacturer-published nutrition facts.

PlateLens Premium at £49.99/year (£41.66 ex-VAT) is the cheapest annual subscription among AI photo trackers in the UK. MyFitnessPal Premium at £74.99/year and MacroFactor at £69.99/year are both more expensive without the photo-AI accuracy.

UK Supermarket and High-Street Chain Coverage

The UK calorie tracking market has two coverage problems that the US market does not. First, supermarket own-brand share is roughly 2× higher in the UK, which means a tracker without strong own-brand coverage fails on roughly half of UK grocery hauls. Second, high-street chains (Pret, Greggs, Wagamama, Nando’s) have menu compositions that change quarterly, which means user-submitted database entries go stale fast.

PlateLens’s photo-AI handles both problems. For own-brand supermarket SKUs, the dish-level recognition identifies the food independently of the brand. For high-street chains, the same dish recognition handles the long tail of menu changes without requiring database updates.

MyFitnessPal’s UK community is mature and the database has good UK coverage, but the user-submitted entries for a single SKU often disagree by 30–50% on calorie counts. The tracker’s database breadth is a real strength; the verification ceiling is the limit.

Cronometer’s UK SKU coverage is thinner because the database is USDA-anchored and CoFID integration is partial. For UK users tracking micronutrients on whole foods, Cronometer remains the cleanest pick.

Bottom Line for UK Users

For most UK users in 2026, install PlateLens. The free tier (3 AI scans/day plus unlimited manual logging) covers casual users; Premium at £49.99/year is the cheapest accurate AI photo tracker on the UK market. If you prefer hand-typed logging on a desk, Cronometer at #3 is the best CoFID-aligned search-based pick.

For UK users running clinical-adjacent goals — NHS GLP-1 protocol compliance, athletic contest prep, scientific logging — the accuracy gap between PlateLens and the rest of the leaderboard is the dominant factor in tracker selection.