The Best WhatsApp Calorie Tracker Bots, Compared

Why WhatsApp calorie bots exist at all

For about two years the obvious way to count calories in a chat was to ask a general assistant: you described dinner to ChatGPT inside WhatsApp and got a number back. That door closed on 15 January 2026, when Meta's updated WhatsApp Business Solution terms took effect and barred providers whose primary offering is a general-purpose AI assistant from the platform; new signups had already been restricted from 15 October 2025. TechCrunch covered the terms change when it was announced; ChatGPT, Microsoft Copilot and Perplexity all stopped answering inside WhatsApp. Meta's stated reason was volume: the assistants generated message traffic the business platform was never designed for.

The part that matters here is what the rule doesn't cover. It targets open-domain assistants, not businesses using AI for one specific job, so a bot that only logs meals is a permitted single-purpose tool and still works. That's why this category suddenly has a dozen small vendors in it: an obvious use case lost its default answer, and nobody big has replaced it.

Disclosure: Olivka publishes this page and is one of the bots compared on it. Every fact about the other bots was read off that company's own website on 30 July 2026, not from a listicle, and anything we could not verify there — unpublished prices, unlisted languages — was left out rather than guessed. Read their pages yourself before you pay anyone, including us.

What actually matters when you pick one

Almost every bot here makes the same homepage promise: send a photo, get calories back, no app to install. That promise is real, and it isn't a differentiator. The differences that show up in week three are duller and more useful.

• Does it name its data? Matching ingredients against USDA FoodData Central or Open Food Facts is a checkable claim; recognizing "thousands of foods" is an unfalsifiable one. Two of the products below name a source, most don't.
• Can you send what you actually have? Photos are the headline, but voice notes are what get used walking home, and text with amounts is the most accurate input of all.
• How fast can you correct it? Every estimate is wrong sometimes; what matters is whether fixing it takes one message or a trip to a dashboard.
• Does it know your food? Ingredient and portion recognition handles some cuisines better than others — the largest accuracy variable here is regional, not technical.
• What does it cost to find out? A trial measured in meals tells you more than one measured in days, because it lasts long enough to test the habit rather than the AI.

One more, easy to overlook: where does your history live, and can you get it out? A chat log isn't an export format. If a bot disappears, your log goes with it — and as the next-but-one section shows, that isn't hypothetical here.

The bots, side by side

Everything in this table was checked on each vendor's own site on 30 July 2026. Trials and prices in this category change often, so treat the last column as a snapshot rather than a quote.

A closer look at each one

Kcaly AI

Kcaly AI runs on WhatsApp only, takes photos, voice notes and text, and is one of two products here that names where its numbers come from: USDA FoodData Central, the US Department of Agriculture's laboratory-measured food database. It lists nine interface languages — English, Spanish, French, Portuguese, German, Italian, Dutch, Arabic and Hebrew — the widest coverage in this group. Alongside logging it offers a barcode scanner, a restaurant menu advisor, AI meal plans and a dashboard with daily, weekly and monthly charts. The trial is three days with no card; plans were $5.50 a month or $39 a year as of July 2026.

Calorichat

Calorichat positions itself as a coach rather than a logbook. It works on WhatsApp, accepts meal photos and text — voice notes aren't mentioned on its site — and pairs unlimited photo analysis with an AI-generated weekly nutrition plan, macro targets, fitness reminders and a web dashboard holding your meal history. It's the most explicit of the group about telling you what to eat next rather than only what you already ate. No free tier is listed; as of July 2026 it was $9.99 a month or $99.99 a year with a 14-day money-back guarantee, and no nutrition database is named on the site.

KCALM

KCALM, whose bot is called Kai, is the broadest product here: an iPhone app plus Telegram and WhatsApp bots, so the log follows you between a real app and a chat thread. On WhatsApp it takes text, photos, voice notes and multi-item lists, and it also logs workouts described in plain language and estimates the burn. It tracks weight with trend charts, protein and water, and is the only one here with explicit GLP-1 medication support, including injection-site rotation and side-effect logging. The free tier is 15 AI food analyses; annual plans include a three-day trial.

Weightbot

Weightbot is the one that messages first. It runs on WhatsApp, takes photos, voice notes and text, and its stated distinguishing feature is proactive contact: daily summaries and check-ins that arrive whether or not you opened the chat. It syncs with Apple Health, which pulls in Whoop, Oura and Apple Fitness data, and it publishes calorie guides for UK chains like Pret, Greggs and Wagamama, which tells you roughly who it was built for. The trial is seven days; prices aren't on the homepage, so we've left them out. It states plainly that it isn't a medical service.

WhatFit

WhatFit is built for India and doesn't pretend otherwise — its own page says its model recognizes Indian cuisine "from biryani to dosa", and prices are in rupees. Since cuisine coverage is the biggest accuracy variable in photo logging, that regional focus is a real advantage rather than a smaller version of a global product. It runs on WhatsApp with photo and text logging, adds water and weight tracking, progress reports and a workout log, plus some unusual social features: squads with leaderboards, a coach dashboard for trainers, a gym partner programme. The free trial is three photo analyses and twenty messages.

Dieta.ai

Dieta.ai is Brazil-first and Portuguese-first, with an English site as well, and it has the deepest integration list here. Besides WhatsApp it ships native iOS and Android apps, and it accepts video of a meal as well as photos, audio and text. It logs exercise, syncs with more than thirty wearables and with Strava, tracks weight, measurements, water and fasting windows, stores recipes, and integrates with Freestyle Libre glucose sensors. There's no free trial — a seven-day money-back guarantee instead — and no prices are published on the English page, so we haven't quoted any.

Olivka

Ours, so check this paragraph harder than the others. Olivka runs on four messengers rather than one — WhatsApp, Messenger, Telegram and Instagram — and takes photos, voice notes and text on all of them. Every meal comes back as a card listing the ingredients it recognized, with Confirm and Edit buttons, so nothing is saved before you can fix it, and corrections are ordinary messages ("that was 300 g, not 150"). Ingredients are matched against USDA FoodData Central and Open Food Facts, with a web lookup for restaurant items missing from both; the full method is written up separately. When a dish is genuinely ambiguous it asks a short question instead of guessing, and /today returns the day's running total. You can log your first meals without installing anything and without creating an account.

What it doesn't do, plainly: no exercise or weight logging, no wearable or Apple Health sync, no barcode scanner, and no weekly or monthly charts — the web dashboard shows today's total and your meal list, and the rest of the history lives in the chat. It speaks Polish and English only, against Kcaly AI's nine, and the dashboard interface is currently Polish-only. If you want workouts, body weight and wearable data in one place, KCALM and Dieta.ai do more than we do.

What this shortlist leaves out

Search for a WhatsApp calorie bot today and you'll be shown more products than the table above holds. That gap is worth explaining, because it's the clearest signal this category gives off.

Three products that still surface for these queries — Calorease, Kalcal and Calie — had no resolving website when we checked on 30 July 2026, on two independent DNS resolvers. We can't tell you whether their bots still answer, only that the domains their listings point at no longer load, and we didn't want to describe products we couldn't verify.

A fourth, Welling, moved in the opposite direction: it built a WhatsApp bot, then retired it. Its own page now reads "Welling on WhatsApp has been discontinued" and points users to its iOS and Android apps instead. Nothing about that is a scandal; products change shape. It's a reminder that a chat thread isn't a backup, and that "can I get my data out" is a fair question to ask in a bot's first week rather than its last.

Which one fits which person

Nobody needs six of these. Working backwards from what you're actually trying to do narrows it fast:

• You want one tracker for food, workouts, body weight and GLP-1 support, and you don't mind an app: KCALM, which spans an iPhone app and two messengers.
• You eat mostly Indian food: WhatFit, because cuisine coverage beats feature count on accuracy.
• You're in Brazil, or you want your log wired to a wearable, Strava or a CGM: Dieta.ai.
• You want to be told what to eat next, not just what you ate: Calorichat, which leads with weekly plans and coaching.
• You'll forget to log unless something asks you: Weightbot, which starts the conversation itself.
• You want a named data source and the widest language coverage: Kcaly AI, with USDA FoodData Central and nine interface languages.
• You want to try it in one message, on whichever messenger you already have open, and add an account only if it sticks: Olivka.

What no WhatsApp calorie bot can do

Every product above returns estimates, and the honest limits are shared by all of them. A photo can't weigh a portion, and the things that move a total most — oil left in the pan versus on the plate, butter under an egg, dressing on a salad — are exactly the things a camera can't see. That floor isn't specific to chat bots: in the United States, printed nutrition labels are legally allowed to deviate from the true value by up to 20 percent, and European rules permit similar tolerances, so a kitchen scale and a barcode don't escape it either. We've written up where the error bars actually come from. Any tool promising exact calories from a photograph is promising more than the underlying food data supports.

There's a platform limit too, and it applies to all of these equally. Under WhatsApp's business rules a company can only message you freely within 24 hours of your last message; after that it needs a pre-approved template. So proactive check-ins work while you're active and go quiet when you do — which is, inconveniently, exactly when a nudge would help. That's a constraint of the platform, not a fault of any one bot.

And whichever you choose, your meal photos and descriptions leave the chat and are processed by the company behind the bot. That's how the estimate gets made, not a hidden catch — but it does mean the privacy policy is worth two minutes before you start sending pictures of your kitchen. That goes for all of these, ours included.

A tracker is meant to show you how you eat, not to grade you. If after a couple of weeks logging is adding stress rather than removing it, that's a reason to stop rather than to try harder — and if you have a difficult history with food, it's worth talking to someone who knows you before counting anything.