Leptin brings when you eat, what you eat and how you move into one plan for the day, and adjusts it when life gets in the way.
It is not a calorie counter. There are no targets to miss and no warnings attached to a meal, because the point is the pattern over weeks, not a number at dinner.
And it is not only for people managing a diagnosis. This is simply how eating and movement work, for everyone.
Together these shape your metabolic health, which is the thing underneath weight, energy and how you feel through the day.
FAST - a timer built around metabolic phases rather than a plain countdown,
with a Live Activity so your progress stays on the lock screen.
EAT - break-fast and meal guidance, meal logging with photos, and a nutrition
database, so progress isn't undone in the first bite.
MOVE - guided workouts with an audible coach that calls out each phase and
keeps going while your phone is locked, interval walking sessions, freestyle
logging, and movement suggestions tuned to how long you have been fasting.
COACH - an AI coach that adapts to your fasting state, goals, and history.
INSIGHTS - streaks, history, and progress over time, plus Apple Health sync so
your workouts and activity stay in step with the rest of your health data.
Leptin works offline: sessions and logs are captured on the device and sync
when you are back online.
Leptin is a wellness and lifestyle app. It is not a medical device and does
not diagnose, treat, cure, or prevent any disease, and it does not provide
medical advice. The in-app AI coach is an assistant, not a clinician, and its
guidance should never be relied on for medical decisions. Consult a qualified
healthcare professional before starting any fasting, nutrition, or exercise
program, especially if you are pregnant or breastfeeding, under 18, or living
with a medical condition such as diabetes, heart disease, low blood pressure,
or a history of disordered eating. Stop and seek medical attention if you feel
faint, disoriented, unusually short of breath, experience chest pain, or feel
unwell in any way.
Core fasting tracking, timers, and insights are free.
SUBSCRIPTIONS
Leptin offers optional auto-renewable subscriptions (subscription group
"Leptin Plans") that unlock the AI coach with a monthly credit allowance plus
expanded access to guided programs:
- Basic: $9.99/month or $99.99/year
- Premium: $19.99/month or $199.99/year
- Unlimited: $49.99/month or $499.99/year
Payment is charged to your Apple ID at confirmation of purchase. Your
subscription automatically renews unless auto-renew is turned off at least 24
hours before the end of the current period. Your account is charged for
renewal within 24 hours prior to the end of the current period. You can manage
or turn off auto-renew in your App Store account settings after purchase.
Terms of Use (EULA): https://leptin.app/terms
Privacy Policy: https://leptin.app/privacy
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