
Penwise: GLP-1 Tracker
Shots, weight & side effects
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Free
In-App Purchases
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About
Penwise is a private GLP-1 diary for semaglutide, tirzepatide, liraglutide and retatrutide. Log every shot, your weight and how your body responds, right on your iPhone. There is no account, and your health data never reaches our servers.
WHAT'S FREE, FOREVER
• Log injections: date, time, medicine, dose, injection site, pain and notes
• Injection-site rotation: a body map, the next site suggested on Home, in the shot log and in the reminder, and a note when you repeat the last site
• Your weight, its trend and your goal
• Water in one tap: cup, glass, can or bottle, with an optional daily goal
• Full history and calendar
• Reminders for shots, check-ins, weigh-ins, dose steps and refills
• Home Screen and Lock Screen widgets, a Live Activity, and a Home screen you arrange yourself
• Import from Shotsy (CSV or backup)
• Backup and restore: one small file you keep wherever you like in the Files app, password-protected by default, and restorable during setup on a new iPhone
• Export your own data any time as a spreadsheet (CSV)
PENWISE+ (INCLUDED FOR YOUR FIRST 14 DAYS)
• Estimated medication-level curves from a pharmacokinetic model, with the sources cited in the app
• Insights: trends and correlations across your data, including a blood glucose chart with your injections marked
• Apple Health: weight, body fat, lean mass, calories, protein, water, resting heart rate, heart rate variability, sleep, steps and blood glucose, read-only
• Calories and protein, grouped by meal
• Doctor report (PDF) for the last 3 or 6 months or your whole treatment: weight change, doses, late or missed shots, side effects and vitals. Open, save or share it
• Clinical export, extra themes and accent colours
ON YOUR WRIST
An Apple Watch companion is included – no extra purchase.
• Your next dose, streak and medicine at a glance
• Log a shot from your wrist; if your phone is out of range it syncs as soon as you reconnect
• Measure your resting heart rate after a shot and save it straight to that shot
• Watch face complications
• Penwise+: your estimated medication level, and logging cravings and weigh-ins from the watch
• Matches the theme and language you picked on your phone
YOUR DATA STAYS YOURS
Penwise is local-first and server-less for health data. Everything you log lives in the app's private storage on your device, protected by your phone's own encryption. No health data on our servers, no ad-network sharing, no selling your data.
SWITCHING FROM SHOTSY?
Import your Shotsy export (CSV or backup) in a couple of taps and continue where you left off. The import is free, and it stays free.
PRICING
Free core diary, forever. Penwise+ is 2.49 per month, 19.99 per year, or 59.99 as a one-time lifetime unlock (EUR in the euro area, USD in the US). The App Store shows the exact price in your currency before you buy. Penwise+ is included for your first 14 days after install; nothing is charged until you choose a plan. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel them in your App Store account settings.
Penwise is a tracking and education tool. It is not a medical device and does not provide medical advice, diagnosis or treatment. Always follow your clinician's guidance.
Privacy Policy: https://penwiseapp.com/en/privacy
Terms of Use: https://penwiseapp.com/en/terms
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What's New in Penwise
1.2.1
November 9, 2026
New in 1.2.1: • The dose schedule opens on the shot that is due: the time, the dose, the suggested injection site and a Log this shot button, with Postpone and Skip below • Referral codes can now discount the monthly and yearly Penwise+ plans as well as Lifetime
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Subscriptions & In-App Purchases
Penwise+ Yearly
All Penwise+ features, billed once a year.
$19.991 Year
14 Days trial



