PenPal app icon

PenPal

Log your shots and weight, bring a clear report to your next appointment, and keep tracking after your last injection.

Download on the App Store

iPhone · iPad · Mac · Apple Vision Pro

See it in action

Dashboard, life after your last injection, and weekly insights.

PenPal dashboard with a new badge, the Trophy Case, a daily check-in and logging buttons Summit dashboard after treatment ended, holding at the Summit weight with a weight chart Insights weekly overview comparing weight, appetite and energy with last week

Everything you need

Built for people using Ozempic, Wegovy, Mounjaro, and Zepbound.

💉

Injection Tracking

Log every dose with date, time, site, and medication. Reminders and Home Screen widgets tell you when the next shot is due, and site rotation keeps you from reusing the same spot.

⚖️

Weight Tracking

Quick-entry weigh-ins, goal tracking, weekly loss rate, and healthy-rate guidance. Metric or imperial.

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Appointment Report

Create a PDF of your recorded doses and weight changes for the last 30 or 90 days, all history, or your own dates. Preview it before you share.

📝

Wellbeing Check-ins

Record appetite, energy, symptoms, and small wins each day. A free seven-day recap shows what changed, with no streak to lose.

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Insights

Compare this week's weight, appetite, and energy with last week's, and see how many days support each comparison. Sparse data stays unscored, and nothing here recommends dose changes.

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Summit: After Your Last Injection

Treatment ended? Summit follows your weight against your Summit weight, with an adjustable Hold-band and weigh-in reminders.

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Trophy Case

28 badges earned from the records you already keep: doses, recorded days, check-ins, wins, reports, and goal milestones. Share any badge as a card.

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Medication Science

See estimated residual medication levels over time, based on published half-lives for semaglutide and tirzepatide.

☁️

Apple Health & iCloud

Import weight from Apple Health and export it back. Sync across iPhone, iPad, Mac, and Apple Vision Pro through your own iCloud, or stay local-only.

Private by design

Your health data stays yours. We never see it, never share it, never sell it.

On-device processing No analytics No ads No tracking iCloud encrypted

Free to start

Your first 4 injections are free. Premium unlocks unlimited tracking. Take a guided tour with sample data before entering your own.

Download on the App Store