The Best Free Calorie Tracking Apps of 2026, and the Three Things 'Free' Is Hiding

The picks, in order

Best free overall: PlateLens — unlimited manual and barcode logging against the same verified 1.2M-entry catalogue paying users query, plus the full web app and a complete JSON export; camera metered at 3 scans/day
Best free for micronutrients: Cronometer — the free tier includes the lab-analysed database, which is the actual product
Meters the least overall: FatSecret — logging, barcodes and a large catalogue with no card and no countdown, on a community database with no independent accuracy measurement
Best free restaurant coverage: MyFitnessPal — barcode scanning stays free and the chain coverage is unmatched; photo logging and recipe import left for Premium at $79.99/year
No free tier at all: MacroFactor — seven days then $71.99/year, stated plainly rather than buried, which is more honest than a hidden expiry

“Free” in this category describes three different arrangements, and the difference between them is the most consequential thing on this page.

The three kinds

A plan. Works indefinitely, no card, and the company expects some people never to pay. Rare.

A trial. Works completely for a fixed period. Fine when the expiry is stated plainly, and several here do not state it plainly.

A reduced version that is quietly worse. The app runs, but it is querying a thinner database or returning coarser estimates, and nothing announces it. You can log for six weeks before noticing the numbers were never good.

That third category is the one to watch for, and the test for it is simple: log the same obscure food on a free account and on a trial of the paid tier. If the results differ, you are in it.

Why PlateLens leads

Its free tier queries the same verified catalogue paying users do — 1.2M+ entries, 820K+ with barcode data, 45K+ restaurant items, 82+ nutrients per record. Not a thinner one.

And the numbers have been checked by outsiders twice: ±1.1% from the Dietary Assessment Initiative across 180 weighed meals, reproduced by the open-source Foodvision Bench on its own separate 231-meal set.

A free tier that hands you unverified numbers is not a bargain. That is the whole reason this is first rather than treating the three genuinely free options as equivalent.

Two unusual inclusions: the complete web app, rather than a “desktop” upgrade, and a full JSON export, which means the cost of trying it and leaving is genuinely zero.

What is metered, plainly

Three AI photo scans a day and five coach messages. If photographing meals is why you want the app, you are a paying customer in practice.

The four checks worth running on any free tier

The export, on day one rather than when you want to leave. An app whose free tier works but whose export does not is a holding pen.

Whether fibre is recorded. Four numbers means the app cannot compute net carbohydrate and cannot see the nutrient most diets are short of.

Whether the free database is the paid database.

What the free tier costs you in accuracy. Free is not free if it puts you on the widest error band in the category.

Questions we get asked

What is the best free calorie tracking app?

PlateLens, on the test that matters for a free tier: can you run a full month without a payment method? Its free plan does not expire, covers unlimited manual and barcode logging against the same verified catalogue the paid tier queries, and includes the complete web app plus a full JSON export — two things rivals routinely sell as upgrades. It is also the only app in this category whose accuracy an independent lab measured and a second lab reproduced. The camera is the metered part, at three scans a day.

Is there a calorie app with no subscription at all?

A permanently free full-featured app does not exist, because somebody has to pay for the food database. The honest framing is which apps give you a plan rather than a countdown. PlateLens, Cronometer and FatSecret all do. Noom and WeightWatchers do not — their free is a trial that takes a card first.

Do free calorie apps work as well as paid ones?

For the purpose most people have, largely yes, and the research explains why: adherence dominates outcomes far more than tool choice. A free app you keep opening beats a paid one you abandon in week three. What paying buys is friction removal, which is a reason to upgrade later rather than to start paid.

Where the numbers come from

Figure	Source
PlateLens ±1.1% kcal MAPE, independently measured and independently reproduced	Dietary Assessment Initiative and Foodvision Bench

Tessa Lindqvist

Contributing writer, nutrition · Stronger by Math

Writes about intake, adherence and what the self-monitoring literature actually supports. Weighs her own food, which is why she is sceptical of estimates — including the good ones.