Leptin

Leptin is your metabolic-health companion - one app that brings fasting, eating, movement, and coaching into a single, simple daily rhythm.

Most apps give you a fasting timer and stop there. Leptin goes further: it helps you understand what's happening in your body as you fast, guides how you break your fast and how you move, and puts an AI coach in your pocket.

FAST - a timer built around real metabolic phases. Watch your body move from fed and anabolic, into fat-burning, toward ketosis — clear phases, not a plain countdown.
EAT - smart break-fast and meal guidance, so progress isn't undone in the first bite.
MOVE - movement tuned to your fasting state, working with your metabolism, not against it.
COACH - an AI coach that adapts to your fasting state, goals, and history.
INSIGHTS - streaks, history, and progress that build consistency over time.

IMPORTANT HEALTH INFORMATION

Leptin provides general wellness and educational information only. It is not a medical device and does not provide medical advice, diagnosis, or treatment. The in-app AI coach is an assistant, not a clinician.

Always consult a qualified healthcare professional before starting a fast, beginning an exercise programme, or changing your diet or medication — especially if you are pregnant or breastfeeding, under 18, or living with a condition such as diabetes, an eating disorder, low blood pressure, or heart disease.

Stop and seek medical attention if you feel faint, disoriented, unusually short of breath, or experience chest pain.