Frequently asked questions

LensNutra uses an AI vision model to identify the foods on your plate, estimate their portion sizes, and look up their nutrition — returning calories, protein, carbs, fat and fiber in seconds. You can then fine-tune any portion or ingredient for an exact log.

AI calorie counting is typically 85–95% accurate on single foods and 65–80% on mixed meals — good enough to track trends and stay in a deficit. Accuracy improves when you separate ingredients, include a size reference, and adjust portions. LensNutra makes every value editable so your log stays honest.

LensNutra comes with a free 3-day trial so you can scan meals, track macros and try every feature before paying. After the trial it’s a single subscription — no ads, no separate paywall for barcode scanning like some competitors.

No. LensNutra estimates portions from your photo, so you can log a meal without a food scale. If you want more precision you can adjust the serving size or scan a barcode or nutrition label instead — whichever is fastest for that meal.

Most calorie apps stop at the plate. LensNutra tracks your whole body — food, weight and before/after photos, plus sleep, heart rate and vitals — and includes an AI meal planner that builds recipes from your ingredients. It’s an all-in-one health app, not just a calorie counter.

Yes. Alongside calories and macros, LensNutra tracks your sleep stages, steps, heart rate, HRV, SpO₂ and resting heart rate, syncing with Apple Health and Health Connect. It’s the only AI calorie tracker that also gives you a full vitals dashboard.

LensNutra is available for iPhone on the App Store and Android on Google Play, in 27 languages with light and dark mode. It syncs with Apple Health on iOS and Health Connect on Android for steps, workouts, weight and sleep.

Yes. LensNutra builds a personalized calorie and protein plan for your goal — lose fat, maintain, or gain muscle — using the Mifflin-St Jeor formula. It sets your protein target higher when you’re bulking and tracks your progress either way.