# Leptin — Metabolic health, made simple > Metabolic health, made simple (iPhone/iPad app by GRAYLIN AI (PTY) LTD.) - Source: https://appshunter.io/ios/app/leptin/id6765621429 (this page in markdown: same URL + `.md`) - Developer: [GRAYLIN AI (PTY) LTD](https://appshunter.io/developer/1872989548) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.1 · 56 MB - Languages: American English - Released: 2026-07-31 - Data updated: 2026-09-09 - User reviews in markdown: https://appshunter.io/ios/app/leptin/id6765621429/reviews.md ## What is Leptin? Leptin is a metabolic-health lifestyle app that brings fasting, eating, movement, and coaching into one daily rhythm. It is organized around five pillars: Fast, Eat, Move, Coach, and Insights. 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 ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Basic Monthly | $9.99 | per month | | Premium Monthly | $19.99 | per month | | Unlimited Monthly | $49.99 | per month | | Basic Yearly | $99.99 | per year | | Premium Yearly | $199.99 | per year | | Unlimited Yearly | $499.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | $10 AI Credits | $12.99 | one-time | | $25 AI Credits | $32.99 | one-time | | $50 AI Credits | $64.99 | one-time | | $100 AI Credits | $129.99 | one-time | ## Version history (last 5 releases) ### 1.2.10 — 2026-09-07 NEW ICON Leptin has a new mark. You will see it on your home screen after updating. YOUR MEALS SHOW UP WHERE YOU EXPECT THEM Meals now appear in the calendar day view, on today and on any past day. A meal you log on one device now shows up on your others, and one you delete disappears from them, without waiting for the next day. LOGGING IS EASIER TO GET RIGHT Logging a meal through the coach arrives already filled in, photo and all. Correcting something you logged now works from every screen that shows it, including intakes, which previously could not be edited at all. A BETTER COACH Your conversation history goes back as far as it actually reaches, instead of showing only the most recent one. The coach opens without the keyboard covering its menu, the message box says what it can do, and it no longer asks the same question twice. SIGNING IN The Google and Microsoft buttons sit side by side again instead of stacking. SUBSCRIPTIONS The free plan is no longer offered as something to buy, and if a purchase does not go through, the app now tells you why. ### 1.2.8 — 2026-08-31 One tap, and the coach already knows what you meant Scan a menu, log a meal, or ask whether something fits your fast. Leptin now understands which of those you asked for, and answers with your eating window, your goals and what you have already eaten today in mind, instead of working it out from scratch. • No more keyboard covering the buttons: these open with your photo and question ready, and send themselves on a short countdown you can cancel or send straight away • Menus and meals you photographed earlier show up again when you scroll back through a conversation ### 1.2.7 — 2026-08-25 This week's reading Leptin now has a library. Every article cites its sources and says which population each finding came from, so you can see the evidence behind the advice rather than take it on trust. • Discover: browse the week's reading, or search the whole library • Bookmarks: everything you have saved, from the library and from your programme, in one list • Mark an article read and it stays where it is, so the library is something you return to rather than a queue that empties • Share an article with someone Typography The app now ships its own typeface, so text looks the same on every iPhone. Until now it used the system font, which meant the app looked noticeably heavier on a phone with Bold Text switched on. Live workouts in landscape • The exercise image sits between the timer and the controls, instead of below the fold • The controls are narrower, with labels under their icons, so nothing breaks mid-word • Leave sits at the bottom right, away from the buttons you are reaching for Fixes • Meal names that wrap no longer put the edit and remove buttons on top of each other • Long button labels in dialogs no longer touch their edges ### 1.2.5 — 2026-08-20 Reminders • Set a reminder to run once, until a date, or for a set number of times, and choose whether that count means times it rings or times you complete it. • Tap a reminder to read it: its schedule, what it will ask, and every past firing with your answers. Correct any of them. • Answer each supplement or action separately instead of one box for all. • Snooze from the alarm, and answer a reminder later if you dismissed it. Fixes: alarms no longer build up and ring many times at once, a cancelled reminder no longer stays armed, and tapping an alarm now opens that reminder instead of the list. Your day on Home • A new Activities timeline shows your whole day at a glance: what is coming, what you have done, and what you logged. Meals, water, supplements and measurements all appear on it as you record them. Programs • Programs now show their artwork, and a carousel to browse them. • Your daily plan is a tab on the program and opens first, so today is one tap away. • Lessons live with the program, and you choose which program reminders you want when you join. Fixes: opening an activity from an earlier day works, and leaving or pausing a program now asks first. Coach • Send several photos in one message. • Ask what a meal is and get a real answer instead of a confirmation. • Correct a meal the coach misread: search foods, add one that is not listed yet, and adjust portions. ### 1.2.4 — 2026-08-11 Move is here — Leptin now coaches your workouts, not just your fasts. WORKOUTS - Guided sessions with an audible coach that calls out each phase, counts you down, and tells you what's next - Interval walking, freestyle logging, and a library of guided routines with illustrated exercises - Rest timers, reps and weight logging, and a summary of every session A DAILY RECOMMENDATION - Leptin now suggests what to do today based on how long you have been fasting, and offers a gentler option when you are deep into a fast FIND AND KEEP WHAT YOU LIKE - Redesigned workout hub with My Workouts, Favourites and Discover - Save favourites, search across workouts and exercises, and make your own copy of anything you find APPLE HEALTH - Workouts you record in Leptin are written to Apple Health, and sessions recorded elsewhere appear in your Leptin history WORKS OFFLINE - Sessions and logs are captured on your device and sync when you are back online LOGGING, IN ONE PLACE - A new card on the home screen for water and drinks, supplements, measurements, how your day is going, and anything bothering you - Log a glass or a bottle instead of millilitres - If you log something that usually breaks a fast, Leptin asks whether it broke yours rather than deciding for you YOUR DAY AT A GLANCE - Home leads with your metabolic state, then Move and Eat, then today's plan - Today suggests three to five things across fasting, eating, movement and recovery, and recalculates as you log COACHING PROGRAMS - When you join a program you choose which parts of your routine it may use - your eating window, your sleep hours, your fasting schedules - and anything you lend is handed back when the program ends ALSO IN THIS RELEASE - Clearer medical disclaimer, reachable any time from the menu - Numerous fixes to workout audio, notifications and timers ## More apps by GRAYLIN AI (PTY) LTD - [Graylin](https://appshunter.io/ios/app/graylin/id6759706980) All apps by GRAYLIN AI (PTY) LTD: https://appshunter.io/developer/1872989548 ## Related topics [leptin](https://appshunter.io/ios/topics/leptin) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*