Cal AI vs MyFitnessPal: Photo Logging vs Food Database

Should you use Cal AI or MyFitnessPal?

Pick Cal AI if you want to log most meals by taking a photo and you are fine paying from the start: its scan results sit behind a subscription and it publishes no price on its website. Pick MyFitnessPal if you want a free plan that still logs food by search, with a large food database behind every entry; its photo Meal Scan, barcode scanner and voice logging are Premium only. Neither company says its photo estimates are exact, so with either app you still check what lands in your diary.

Every price and vendor quote below comes from the vendors' own pages and App Store listings, checked October 2026.

Photo first vs database first: how each app logs food

Cal AI starts from the picture and works out the numbers, while MyFitnessPal starts from its food database and uses the picture to find matching entries.

Cal AI describes its scan like this: "Snap a photo with Cal AI, and your phone's depth sensor calculates food volume. Our AI then analyzes and breaks down your meal to determine calories, protein, carbs, and fat." (calai.app, checked October 2026). You can also scan a barcode or describe the meal in words.

MyFitnessPal's Meal Scan works the other way round. Its help center says the app "uses machine learning and computer vision" and "suggests matching foods from our verified food database" (MyFitnessPal Meal Scan article, checked October 2026). You confirm the suggestions, and the calories come from the entries you pick. The database is a mix: MyFitnessPal says it holds foods added by the company and foods added by users, and its App Store listing mentions "20.5M+ foods, including restaurant dishes".

Cal AI and MyFitnessPal side by side

What Cal AI and MyFitnessPal cost

MyFitnessPal shows prices, but its website and the US App Store disagree; Cal AI publishes no price at all, so its App Store list is the only official figure you can see before the in-app paywall.

MyFitnessPal. The Premium page, which we loaded from outside the US, showed $9.99 a month or $49.99 a year. The US App Store listing shows those amounts too, plus items named "Monthly Premium" at $19.99 and "Yearly Premium" and "Annual Premium" at $79.99. MyFitnessPal's own help center says "Pricing varies by country and by plan length." We did not find a Premium+ price on any official page, so we leave it out. If you want the full breakdown of the MyFitnessPal tiers, read our page on what MyFitnessPal Premium costs and what stays free.

Cal AI. Neither the home page nor the FAQ on calai.app shows a price. The US App Store listing shows items named "Unlimited" at $2.99, $5.99, $9.99, $19.99 and $29.99, one "Unlimited Plan" at $19.99 and a "Streak Restore" at $0.99. None of these names says monthly or yearly, so we cannot tell you which one is a monthly price. The FAQ mentions a family plan without a price, and says "Subscriptions are tied to the platform you originally purchased on."

App Store lists show at most 10 items, and they can mix current, older and promotional prices. The table below groups items exactly as they are named. This is the App Store listing, checked October 2026; the price you see at checkout can differ.

Sources: the MyFitnessPal and Cal AI App Store pages for each country (for example Cal AI in the UK store), checked October 2026.

What each vendor says about photo accuracy

Both companies tell you the photo result is an estimate; they just phrase it very differently.

Cal AI's FAQ says: "CalAI is about 80% accurate. No food tracking app is perfect, and calories and nutrition values can vary." (Cal AI FAQ, checked October 2026). The page does not say what the 80% measures or how it was tested, so read it as the company's own claim, not as a test result.

MyFitnessPal says: "Meal Scan gives you a starting point, not a final answer, so you always have the last word on what goes in your diary." It adds a useful tip: "If your meal has several items, scanning one dish at a time usually gives you more accurate suggestions."

Independent research points the same way. A 2024 study in Nutrients found that MyFitnessPal and Fastic "had the highest accuracy (97% and 92%, respectively) out of seven AI-enabled food image recognition apps", but that figure is about recognising foods, and the same abstract says "automatic energy estimations from AI-enabled food image recognition were inaccurate" (Li et al., PubMed). A small 2023 pilot with covertly weighed meals found "larger error for higher energy meals" (Lozano et al., PubMed). We cover the evidence in depth in how accurate AI photo calorie counters are.

In practice, naming the food is usually the easier part; portion size and fat you cannot see are much harder for a photo to judge. A few habits help with either app:

• Scan one dish at a time when the plate has several foods.
• Check the portion before you save, not the food name alone.
• Add cooking oil, butter and sauces by hand, because a photo cannot see what was cooked into the food.
• Weigh your most calorie-dense foods now and then, so you know what a normal portion looks like.

Free plans and trials: what you get without paying

MyFitnessPal has a real free plan; Cal AI offers a 3-day trial and does not spell out what works after it without a subscription.

MyFitnessPal Free covers food and exercise logging, measurements, your own foods and recipes, macros, goals by percentage and partner apps (MyFitnessPal help center, checked October 2026). The barcode scanner left the free plan: "As of October 1, 2022, Barcode Scan is available only with a Premium subscription." New users who never had Premium get a 7-day free trial.

Cal AI's site invites you to "CLAIM YOUR 3-DAY FREE TRIAL". Its FAQ says "Tap the + button to log food. This opens the paywall screen." With the App Store line on scan results, plan on Cal AI being a paid app. If you start the trial, set a reminder to cancel before it ends.

Devices, languages and the small print

Cal AI sets minimum phone system versions, and MyFitnessPal's AI features need your app set to English.

• Cal AI: "CalAI requires iOS 18 or higher on iPhone, and Android 10 or higher." The App Store lists 15 app languages, including Arabic and Hindi.
• MyFitnessPal Meal Scan and voice logging: Premium, app language set to English, not on the website; Meal Scan also needs iOS 18 or Android 13 and above.
• MyFitnessPal Coach: an AI nutrition assistant for Premium and Premium+ on iOS, in English, in six countries including the US and UK. MyFitnessPal notes that "Coach cannot log food for you" (Coach article, checked October 2026).

Privacy: what happens to your food photos and data

Both privacy policies use almost the same sentence about selling data, so the policies alone will not decide this for you.

Cal AI's privacy policy (effective May 21, 2026) says it collects "Food, drink, and medications you consume (including as submitted via voice and image logging)". Both it and MyFitnessPal's privacy policy say they do not "expressly" sell information, but that some cookie uses on their websites may count as "sales" or "sharing" under privacy laws. MyFitnessPal also had a breach in 2018: Under Armour's SEC filing says "approximately 150 million user accounts were affected", with usernames, email addresses and hashed passwords taken.

MyFitnessPal's App Store listing also mentions GLP-1 dose logging and reminders. If you take GLP-1 medication, or have a history of disordered eating, talk to your doctor before setting calorie targets in any app.

Which one fits you

It depends on how you eat and whether you want to pay at all.

• You want free calorie logging: MyFitnessPal Free. Cal AI has no clearly described free plan.
• You want to log almost every meal by photo: Cal AI is built around that. Check the price and billing period in your app store first.
• You already use MyFitnessPal: Premium adds Meal Scan, barcode and voice logging, so you keep your history and add photos.
• Your phone is not set to English: Cal AI may suit you better, since MyFitnessPal's photo logging needs English.

Still undecided? Our roundup of calorie counter apps with AI food photos compares more photo apps, and apps like Cal AI lists other options with their prices. If you are leaving MyFitnessPal, see the best MyFitnessPal alternatives.

A third option: food photos and training plans in one app

If you want photo logging and a training plan in the same place, Trainera is worth a look; if you only want calorie logging by photo, a dedicated tracker may suit you better.

Trainera is one app for people who train on their own with an AI coach. The Free plan needs no card and includes workout logging and the diet tracker. Food search pulls from Open Food Facts and USDA FoodData Central, and you can type in a barcode number on every plan.

The AI food photo scan is on Premium. An AI vision model names the foods on your plate and estimates the grams, calories and macros of each item, and you can correct every item before you log it. Results are estimates, the same as in the apps above.

Plans are monthly, and prices differ by country on trainera.fit/pricing. If a personal trainer or gym coaches you in Trainera, you use the app for free. You can see how the AI coach builds training and nutrition plans on the AI fitness coach page, or read our Trainera vs MyFitnessPal comparison.

How to test both apps in one week

The quickest way to choose is to log the same meals in both apps for a few days and see which one you keep opening.

1. Start MyFitnessPal Free and log by search for two days, so you know the free plan before any trial.
2. Start the Cal AI trial and photograph similar meals for three days.
3. Weigh one calorie-dense meal and compare it with both results.
4. Keep the app you actually used every day, not the one with the longest feature list.

Want food photos, training plans and an AI coach in one app? See how Trainera's AI fitness coach works or start free with no card.