Support

iPhone, with iOS 16.4 or later. The app is designed for iOS 26. There’s no Android version for now.

No. You open the app, answer a few questions to set your goals, and you’re off. No email, no password.

Everything you need to log is free, with no time limit and no ads: workouts, programs, meals, barcode scanning, supplements, measurements, full history, charts, 3D body and export. Premium adds the AI coach, the program generator, meal photo analysis, meal suggestions and plans, advanced analytics and customization.

Generic foods come from the Ciqual 2025 food composition table published by the French agency Anses (3,484 foods), built into the app and usable offline. Packaged products come from Open Food Facts, a collaborative database: if a product is missing or looks wrong, create your own food in Lesto, or fix the entry on openfoodfacts.org.

On your iPhone. Lesto has no server that keeps your log. Only three features send data when you use them (the AI coach and photo analysis, with your consent, and product search): the details are in the privacy policy.

Lesto makes an automatic backup on your phone every day. To move to a new iPhone, you have two options:

• restore your new iPhone from an iCloud backup or from your old iPhone: Lesto comes back with your data;
• or, in Lesto, go to Settings › Data: export a full backup (.lesto file), send it to your new iPhone, then tap “Restore a backup”.

Remember to export a backup every now and then and keep it somewhere else (Files, iCloud Drive, a computer): if you delete the app, its data is deleted with it.

Yes. In Hevy, export your workouts as CSV, then in Lesto: Settings › Data › Import from Hevy. Exercises are matched to Lesto’s (you confirm the uncertain ones) and personal records are recalculated. Workouts already in Lesto are skipped, so you can re-import without duplicates.

Settings › Data. Export is free: a full backup, or CSV files by category that open in Numbers, Excel or Google Sheets. “Delete all my data” erases everything Lesto has stored on your phone; it’s permanent, so export first if you want to keep a copy.

No. You log your weight, measurements and workouts directly in Lesto.

It reads your log and speaks gym. A few examples:

• “Did bench 4x8 at 80 and pull-ups 3x10”: it prepares the workout, you save it;
• “3 eggs and a slice of toast this morning”: it adds your meal with its macros, which you can adjust;
• “Give me a 45-minute leg workout”: it builds a workout;
• “How much protein do I have left?”, “Can I train legs today?”, “How’s my bench press going?”.

It never changes your log without your confirmation, and every addition can be undone with one gesture.

Yes, and only with your consent, asked before first use: your question and the parts of your log needed to answer it go through a Lesto relay server, which doesn’t keep them, to OpenAI’s GPT model, which doesn’t use them for training. It’s all detailed in the privacy policy. You can withdraw your consent in Settings › Privacy.

Yes, like any AI: check what it suggests before you confirm. Its advice is general fitness advice, not medical advice. If you have pain, an injury, are on medication or are pregnant, ask a healthcare professional.

Partly. Without a connection, it handles simple requests (what you ate, your last workout, your remaining protein, “I took my creatine”) and shows an icon to let you know. For everything else, it needs a connection.

On your iPhone: Settings › your name › Subscriptions › Lesto › Cancel Subscription, at least 24 hours before the renewal date. You keep Premium until the end of the paid period, and all your data stays yours, on the free version.

Sign in with the same Apple Account, then, in Lesto, open the Premium screen and tap “Restore”. Your subscription is tied to your Apple Account, not to your phone.

Payments are processed by Apple, so refund requests go through reportaproblem.apple.com. Write to us too if something’s wrong; we’d rather know.