Kcalm vs YAZIO

Kcalm starts from the meal rather than from a search box. Photograph the plate, type "two poached eggs on rye and a flat white", or send a voice note to a Telegram or WhatsApp bot, and back come calories, macros and a 42-nutrient breakdown. Those bots matter more in Europe than anywhere else, because WhatsApp is the default messaging app there, so the logging surface is one you already have open all day.

YAZIO is a German-built calorie tracker with one of the strongest European food databases in the category, plus 2,900-plus recipes, meal plans and an intermittent fasting timer, shipping on iPhone, iPad, Apple Watch and Android in 20 languages, with more than 100 million users claimed across more than 150 countries. It is also the cheaper subscription by a wide margin.

If you shop in European supermarkets, want a fasting timer and recipes in one app, carry an Android phone, or simply want the lower price, YAZIO is the better fit today. The rest of this page is for readers whose tracking dies at the search box, or who are on a GLP-1 and want the shot log beside the food log.

Quick comparison

How logging actually works

Kcalm: the meal, not the catalogue

You send what you ate and adjust from there if the estimate looks off.

Kcalm is explicit about the limits: estimates within 10 to 20 percent for most foods, a range rather than a guarantee, and roughly the tolerance packaged nutrition labels are legally allowed to carry anyway. We wrote up how AI food recognition performs separately. Goals use Mifflin-St Jeor for BMR, Harris-Benedict activity multipliers and Atwater factors, plus a Base plus Exercise mode and custom goals.

YAZIO: search, barcode, and a PRO-only photo scan

YAZIO is a classic database tracker with an AI layer on top: search or scan a barcode, pick the entry, set the portion. The App Store description advertises more than 4 million searchable items, a barcode scanner in the standard calorie counter, and "instant access with no signup required", matching Kcalm's guest mode.

The AI photo scan arrived later and it is gated. YAZIO's help centre and an independent 2026 review both place it behind YAZIO PRO, though the App Store description markets the AI tracker without saying so. The US listing was renamed to "AI Calorie Tracker by Yazio" to reflect the shift, a notable move for a company that spent a decade selling database accuracy, while the German listing is still titled "Yazio: Kalorien Zähler & Diät". The same review reports the scan handles simple single-ingredient plates better than mixed or home-cooked dishes.

What one photo gives you back

That last point is the whole argument. Mixed and home-cooked dishes are where a database-plus-photo-shortcut approach struggles, and they are most of what people actually eat.

Micronutrients come from the same action, where YAZIO's in-depth analysis is a PRO feature.

YAZIO's version of those numbers, for a packaged product, is the manufacturer's own published panel, which is more exact than any estimate. Kcalm's are inferred and marked as such. The trade is exactness on labelled food against coverage of everything else.

Logging without opening an app

Kcalm's clearest structural difference is that it does not require the app. Message the Telegram or WhatsApp bot with a photo, a sentence or a voice note, and it syncs to the iOS app when you next open it.

YAZIO has nothing comparable on messaging. Its Apple Watch app, home-screen widgets and Siri Shortcuts do shorten the path, and Siri can add a food or water entry by voice, but there is no chat-based capture and nothing that works on a phone without the app installed.

European food coverage and meal planning

Twenty languages and a database built for European shelves

This is YAZIO's genuine moat. The iOS listing supports English plus 19 other languages, most of them European, and the rating counts tell the same story: 4.7 stars from 49,725 ratings on the United States App Store, 4.6 stars from 435,091 ratings on the German one, close to nine times the volume. If you log German own-brand yoghurt or a Dutch ready meal, YAZIO's database will usually have it where a tracker built for North American shelves will not.

YAZIO also bundles three things Kcalm does not match: more than 2,900 recipes with a cooking mode and grocery list, an intermittent fasting tracker with 16:8 and 5:2 plans, and PRO meal plans built around your calorie target. Kcalm is a measuring instrument, not a meal planner.

What breadth does not fix

Breadth has a cost, and YAZIO's own reviewers name it. A four-star App Store review from January 2025 reads: "it used to not have ads after each track, and you used to be able to use barcode scanning wo premium… now you have to pay for everything." The same review still calls YAZIO "the best calorie counter out there imo", so the complaint is about what moved behind the paywall, not about the product.

Verifiable today: the iOS listing carries a "Contains Advertising" note in its age rating, the Google Play listing is labelled "Contains ads", and removing ads is a PRO benefit. There is a gamification layer too. A December 2025 review describes earning "chests for diamonds (in-app currency)", and a 2024 review mentions being "reluctant to reinstall because I had a streak going". If a broken streak has ever made you stop logging, weigh that: Kcalm has no streak to break, no in-app currency and no challenges.

GLP-1 medication support

Kcalm tracks GLP-1 medication directly: shot logging with estimated medication levels, injection-site rotation and side-effect notes for Wegovy, Ozempic, Mounjaro and Zepbound. It also covers the bad GLP-1 day, when appetite is gone and opening a tracking app feels like too much: one message to the bot still leaves a real record instead of a gap. We cover calorie and protein targets on GLP-1 medication separately.

YAZIO does not advertise GLP-1 tracking anywhere in its current App Store description or on its site. Kcalm is not alone in offering it, though, since MyFitnessPal added free GLP-1 support in April 2026.

Privacy and data

Apple's App Privacy label for YAZIO lists Identifiers under "Data Used to Track You", meaning they may be used to track you across other companies' apps and websites. Under "Data Linked to You" it lists Health and Fitness, Purchases, Contact Info, User Content and Identifiers. That is a normal profile for an ad-supported free tier, but it is the profile.

Kcalm runs no advertising on any tier. Photos are processed for analysis and not stored permanently, data is encrypted in transit and at rest, Row Level Security isolates accounts, and you can delete everything at any time. Guest mode means you can start without registering, and the privacy policy has the detail.

Pricing

Kcalm publishes one price on its site. YAZIO's price varies by storefront and promotion, and that is the thing to check before you subscribe.

Where YAZIO is the better buy

• European food coverage is genuinely better, with supermarket own-brands and regional products that databases built for North America routinely miss, and PRO's in-depth analysis reports those products' published panels rather than an estimate.
• It is the cheaper option by a wide margin, and its free tier gives you unlimited manual logging rather than a fixed number of AI analyses.
• It runs on Android, iPad and Apple Watch, with more than 50 million Google Play downloads behind the Android build, and it has a barcode scanner, still the fastest way to log a packaged product, which Kcalm lacks entirely.
• Twenty languages on the iOS listing, including German, French, Italian, Spanish, Polish and Turkish, against Kcalm's three.
• An intermittent fasting tracker with 16:8 and 5:2 plans, 2,900-plus recipes, a grocery list, cooking mode and PRO meal plans, plus step tracking with Fitbit and Garmin sync. It answers "what should I eat" as well as "what did I eat".

Where Kcalm is the better buy

• Photo and plain-language logging sit in the free tier rather than behind a subscription, the reverse of YAZIO's arrangement.
• Telegram and WhatsApp logging records a meal by photo, text or voice note without opening a tracking app, and those bots work on Android phones even though Kcalm's own app does not.
• Mixed and home-cooked dishes are the normal case rather than the weak case, because there is no catalogue to be missing from.
• GLP-1 tracking with shot logging, injection-site rotation and side-effect notes, which YAZIO does not offer.
• No ads on any tier, so no advertising business model shapes what the app shows you.
• No streaks, no in-app currency, no challenges and no social feed, so a missed day costs you nothing but a missed day.
• One published price in one currency, so what you see on the site is what you pay.

Switching takes about two minutes

Nothing to export, nothing to cancel, and YAZIO's free tier costs nothing to keep for barcode scanning.

Install Kcalm, use guest mode so there is no signup and no card, and photograph the next home-cooked meal, the kind YAZIO's own reviewers say its photo scan handles least well. That is the comparison that decides this. Fifteen analyses is about three days, and it takes one dinner to see whether estimation reads your food.

The bottom line

YAZIO is the better buy if you live in Europe, log packaged supermarket food, use Android, want a fasting timer and recipes in one app, or want nutrient figures read off a manufacturer's panel. It is also cheaper by some distance. The free tier is usable if you can tolerate ads, though the AI photo scan, meal plans, in-depth nutrient analysis and the full recipe library all need PRO.

Kcalm is the better buy if what breaks your tracking is friction at the moment of eating: searching a database mid-meal is tedious, you are on a GLP-1 and want the shot log and the food log together, or you want to log by sending a WhatsApp message on a bad day. The honest caveats: no Android app, no web app, no barcode scanner, no recipes, no fasting timer, a materially higher yearly price, and a free tier of 15 AI analyses. If that trade sounds right, install it and photograph one dinner tonight.

Frequently Asked Questions

Is there a free alternative to YAZIO?

Kcalm's free tier gives you 15 AI food analyses with no credit card, plus nutrition tracking, personalised goals, progress charts and guest mode. YAZIO's free tier carries ads, and its AI photo scan, meal plans and full recipe library need PRO. So YAZIO gives you unlimited manual logging with ads, Kcalm a small number of AI analyses with none.

Does Kcalm work on Android?

There is no Kcalm Android app. The Telegram and WhatsApp bots work on any phone, including Android, with photo, text and voice logging, though that covers logging and not the iOS app's charts, widgets and GLP-1 screens. YAZIO has a full native Android app on Google Play.

Is Kcalm cheaper than YAZIO?

No. Kcalm Premium is USD 14.99 a month or USD 69.99 a year, while YAZIO's US listing shows twelve-month plans at USD 23.90 and USD 47.90, so a YAZIO year can cost a third of a Kcalm year. YAZIO's price also moves with your storefront and any running promotion, so compare the figure your own store quotes.

Can I track calories without opening an app?

With Kcalm, yes. Send a photo, a sentence or a voice note to the Telegram or WhatsApp bot and it logs, then syncs to the iOS app. YAZIO has no messaging integration, though its Siri Shortcuts do let you add a food or water entry by voice, and its Apple Watch app and iPhone widgets shorten the path.

Does YAZIO have AI photo logging?

Yes, and the US App Store listing has been renamed "AI Calorie Tracker by Yazio" to signal it. The feature requires a YAZIO PRO subscription. An independent 2026 review reports it handles simple single-ingredient plates well and mixed dishes less reliably.

Which app is better for European foods?

YAZIO, clearly. Its database was built for European supermarket products, it ships in 20 languages on iOS, and the German App Store alone holds 435,091 ratings against 49,725 in the United States. Kcalm estimates from the food itself, so it is not tied to any country's catalogue, but it will not reproduce a specific own-brand product's nutrition panel.

Does Kcalm track intermittent fasting?

No. Kcalm has no fasting timer, no protocol library and no fasting streak. If a 16:8 or 5:2 schedule is central to how you eat, that on its own is a reason to pick YAZIO.

Sources

• YAZIO on the US App Store, ratings, in-app purchase prices, privacy label and description: https://apps.apple.com/us/app/ai-calorie-tracker-by-yazio/id946099227
• YAZIO on the German App Store, euro prices and 435,091 ratings: https://apps.apple.com/de/app/yazio-kalorien-z%C3%A4hler-di%C3%A4t/id946099227
• YAZIO on Google Play, Android rating, review count and "Contains ads" label: https://play.google.com/store/apps/details?id=com.yazio.android
• YAZIO help centre, technical requirements, no web version and mobile only: https://help.yazio.com/hc/en-us/articles/360000752725-Technical-Requirements-for-Yazio
• YAZIO iOS product page, widgets and Siri voice logging: https://www.yazio.com/en/start/ios-app
• YAZIO about page, 100 million users and 150 plus countries: https://www.yazio.com/en/about-us
• YAZIO promo code page, 20 percent off the 12-month subscription: https://www.yazio.com/en/promo-code
• Independent 2026 YAZIO review covering the free tier, European database and photo accuracy: https://calorie-trackers.com/reviews/yazio/
• Kcalm on the App Store: https://apps.apple.com/app/kcalm/id6747867349