Frequently asked questions

Volumeal is a calorie-tracking app for iOS and Android. It estimates a meal's calories and macros from a photo, a barcode or your voice, and shows the result as a confidence range rather than a fake exact number.

Yes, Volumeal is available on the App Store (iPhone) and Google Play (Android).

Volumeal and this site are bilingual: French and English.

Yes. Daily tracking is free with 5 scans per day. A Premium subscription unlocks unlimited scans.

From a photo of the plate: the food is recognized, its portion estimated, then converted into calories and macros. The result shows as a confidence range that you can tighten by correcting the portion in one tap.

Because a photo estimate always has a real margin (often above ±20%). Showing “312 kcal” to the gram would be misleading. The range tells the truth and keeps you from optimizing noise.

As accurate as a photo estimate allows. The difference: Volumeal honestly shows its margin as a range, instead of hiding it behind a single number.

From recognized reference nutrition tables (such as ANSES Ciqual in France, USDA FoodData Central in the US) for foods, and from manufacturer values via barcode for packaged products.

Not for daily use. But for very calorie-dense foods (oil, butter, cheese, nuts), where 10 g changes everything, weighing when precision matters clearly reduces the error.

Placing a card or coin in the photo frame gives the app a size reference, which makes the portion estimate more accurate.

Open the app, take a photo of your plate: the foods are identified and portions estimated automatically.

Yes. Scan a packaged product's barcode to get its name and real nutrition facts — that's where the number is most reliable.

Yes. Just say what you ate and the meal is estimated right away.

Yes. You can import an existing photo from your gallery to analyze it, in addition to taking one directly.

Adjust the portion or food in one tap: the range and confidence level recalculate immediately.

Yes. Each meal shows its macros, and the diary shows your color-coded daily total against your goal.

Use our free calorie calculator: it estimates your daily need based on your profile and goal, then you carry that benchmark into the app.

The calorie calculator applies the Mifflin-St Jeor formula (BMR) multiplied by your activity level, shown as an honest range.

Use the deficit calculator: it suggests a reasonable deficit based on your target pace, with an estimated timeline and a safety floor.

The free version covers daily tracking with 5 scans per day, barcode, voice input, the diary and trends.

Premium unlocks unlimited scans and removes the daily limits, for unconstrained tracking.

The subscription is managed from the app, via your App Store or Google Play account. You can cancel anytime in your store's subscription settings.

Yes: once your free quota is reached, you can watch an optional ad to unlock one extra scan.

No. Your photos are used for the estimate and are never sold.

Yes. Your photos and meals are encrypted, and only strictly necessary information is transmitted. See our privacy policy.

You can request deletion of your account and data from the app or via our account deletion page.

An account lets you sync your tracking across devices and back it up. Only necessary information is used.

Yes, optionally and under your control: you can sync your calories and weight with Apple Health (iOS) or Google Fit (Android).

No. Health/Fit sync is optional and stays on your device under your control; that data is not sold.