
Diet Otter . Weight Tracker
Weight, calories and trends
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Free
With Ads
About
Diet Otter turns a simple weigh-in into a real reading of your progress.
You log your weight. The app does the rest: it works out your body fat percentage, your basal metabolic rate, your daily energy expenditure, and draws the actual trend of your curve — the one that matters, not the day-to-day noise.
TRACK WITHOUT THE CHORE
• A weight, a date, that's it
• Calorie and protein counters, two taps
• Waist, neck and hip measurements if you want more precision
• A logbook of every day you've recorded
UNDERSTAND WHAT IT MEANS
• Body fat percentage using the Navy method, as used by the US Navy
• Lean mass, basal metabolic rate (Mifflin-St Jeor), estimated total expenditure
• Average and cumulative calorie deficit, converted into theoretical kilos of fat
• Charts for weight, body fat and calories
KNOW WHERE YOU'RE HEADING
• Curve projection by linear regression on your own data
• Estimates at 7 days, 1 month, 3 months, and up to next Christmas
• Estimated date to reach your target weight
YOUR DATA STAYS YOURS
• No email, no phone number: a nickname and a 6-digit PIN are enough
• No health data is ever used for advertising
• Permanently delete your account from inside the app, in two taps
• French, English and Japanese
Diet Otter is free. It is funded by a few ads, shown sparingly.
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Diet Otter is a personal tracking tool. The values shown are rough estimates, for guidance only: they are not a diagnosis, medical advice or treatment. Please consult a health professional before starting any weight loss or weight gain plan.
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What's New in Diet Otter . Weight Tracker
1.0
August 27, 2026




