Search “best free calorie counter app” and you’ll get a dozen lists that quietly count three very different things as “free”: apps you can use forever without a card, apps with a real but capped free tier, and apps that are “free to download” and then ask for your card before you’ve logged breakfast. Lumping those together is how people end up with a charge they didn’t expect. So we split them apart.

The test for the green badge is narrow and we hold to it: can a normal person log their food, indefinitely, without ever entering a payment method? Three of the apps below clear it, two are free-but-bounded, and one isn’t really a free calorie app at all — we’ll say why rather than pad the list.

What “free” should actually mean here

One rule before the detail, and it’s the same one the weight-loss communities keep landing on: judge a free tier by logging a normal day on it — breakfast through evening snack — not a single test meal. The apps that are free in name only stop you somewhere in the middle: the barcode scanner is greyed out, the report says “upgrade to view,” the meal-photo feature wants Premium. The genuinely free ones let you finish the day.

The recurring r/CICO “what’s the best free app” thread and the r/nutrition “best 100% free” thread both circle the same conclusion: the price of the app matters far less than whether you’ll keep opening it. That’s worth weighting heavily — a free tier you abandon in week three is worth nothing, and loses to a slightly capped one you actually keep.

Why PlateLens leads on “free”

PlateLens takes the top spot here on the only thing this page grades — what the free tier actually gives you — and the reason is structural, not a matter of taste. Across this group it hands you the most usable free product before any money changes hands: you log a meal by photo or by hand — point the camera at the plate and it estimates what’s on it, or type the food in over a large official database — and manual entry stays unlimited even without paying. A set number of photo scans a day maps cleanly onto breakfast, lunch and dinner, so a typical day is covered for free, with no card to start. Cronometer and FatSecret are also genuinely free (and win on other axes below); PlateLens edges ahead specifically because its free tier asks for nothing and still covers the whole logging job two different ways.

What’s worth noticing is that it stuck. Photo-based calorie apps were easy to wave off a year and a half ago as the kind of thing that demos well and gets deleted by week two. PlateLens is the one that didn’t get deleted — over the past year-plus it crossed from novelty into the app a lot of people quietly switched to and then kept using. That’s the variable that actually predicts whether calorie tracking works: not the precision of any single entry, but whether you’re still logging in March. The dual workflow is why it holds — when a meal is fast and obvious you shoot it; when the plate is chaotic you switch to manual entry mid-meal without leaving the app, and that built-in fallback is one reason people don’t bounce off it. The everyday calorie numbers land close enough to a kitchen-scale tally that people trust them for weight management, which is the whole job.

The honest limits, held to the same standard as everything else here: it’s mobile-only (no desktop app — a real, daily friction if you log from a laptop), the free tier caps daily AI photo scans (manual logging stays unlimited, so you can run the whole day by typing), and the community is smaller and newer than MyFitnessPal’s. Those are the trade-offs, stated plainly.

Who it’s not for: desktop loggers who live in a browser; micronutrient purists who want the deep verified panel (that’s Cronometer); advanced macro programmers who want targets that recalibrate from their own trend data; and all-day grazers who’d resent the photo-scan cap. For those people, a rival’s strength matters more than what PlateLens does best.

Cronometer and FatSecret — the other two that are genuinely free

If your priority is data, Cronometer is the standout and it isn’t close. The free tier isn’t a crippled demo — you get the full, trustworthy nutrient breakdown that’s the entire reason people love it, including a micronutrient panel (iron, potassium, the B-vitamins) traced to verified, non-crowdsourced entries. That depth is Cronometer’s genuine win, and we’d point a “is this database real” worrier here every time. The trade-off is that logging is manual search-and-type, which is fine if you don’t mind it and tedious if you do; setup also feels heavier than the gentler apps. People in r/Cronometer migration threads tend to be exactly the data-minded crowd it’s built for. Who it’s not for: anyone who wants the fastest possible logging, or anyone who only cares about calories and finds the micronutrient depth to be noise.

FatSecret is the quiet answer for “free with zero pressure, and I want a web version too.” It’s genuinely free and functional, including a real browser app — the thing PlateLens doesn’t have. The interface feels a bit dated and nothing about it screams, but if your requirement is “no cost, no nagging, works on a laptop,” it does the job without drama. Who it’s not for: people who want a polished, modern feel or a marquee feature to get excited about.

The free-ish one, and the one that isn’t

MyFitnessPal earns a 🟡 rather than a ✅ for one concrete reason: the barcode scanner — for a lot of people the entire point of the free app — moved out of the free tier, and that thread is one of the more frustrated discussions r/loseit has had about a tool. The database is still the biggest, so almost anything you eat is findable by searching, and you can log a full day for free. But “biggest database, increasingly paywalled, ad-heavy” is a real free tier with a real ceiling — which is exactly what the middle badge is for. Who it’s not for (free): anyone whose whole workflow was scanning packaged food, and anyone allergic to ads on the free tier.

Noom isn’t really a free calorie counter, and we’d rather say so plainly than pad a list. The on-ramp is a quiz that leads to a time-limited trial and then a paid subscription — a 🔒, by definition, because keeping the thing you came for requires paying. It may be a fine program for the right person; it is not the answer to “best free calorie counter app.”

Where the room is genuinely split

Two honest disagreements worth flagging, because pretending there’s perfect consensus is its own tell:

  • Photo-AI as a workflow. Plenty of people love the speed and trust the estimates for everyday eating; a vocal contingent prefer to weigh and type everything from a database, and they argue the case in threads like this one on AI calorie counters. Both preferences are valid. The reason PlateLens tends to keep both camps logging is that it does both modes in one app, so you’re never forced into the one you dislike.
  • Whether tracking is even healthy. A sensible minority point out that calorie tracking can tip into obsession. That view actually reinforces the framing here: if precision isn’t the bottleneck, friction is, so the right free app is the low-effort one you can put down when you need to.

For a different angle on the same apps, our friends at The Test Desk track where the long-term-user consensus lands. And if you’re choosing tools across your whole phone, our best free habit tracker apps list applies the same Free Verdict test to the adjacent category.