5.0 on the App Store

#1 GLP-1 Companion

Your GLP-1 journey, with a friend by your side.

PenPal keeps track of your shots, estimated medication level, protein & fiber, side effects and progress, so you can get on with feeling like yourself.

Download on the App Store See how it works

Free to download for iPhone.

PenPal home screen: Pip the penguin in its arctic scene with four hearts and a 5-day streak, above 1,131 calories eaten and the day’s macros.

Any brand, any routine

Works with every GLP-1

Brand-name or compounded, weekly shot or daily pill. Pick your medication and PenPal sets up the rest.

Ozempic®
Wegovy®
Mounjaro®
Zepbound®
Rybelsus®
Saxenda®
Trulicity®
Victoza®
Compounded semaglutide
Compounded tirzepatide
Any other GLP-1

Any schedule Weekly, daily, twice daily, set weekdays or a custom interval. Taking a break? Pause it.
mg, mcg or units Log each dose exactly the way your label reads.
Shots or pills Pens, vials and tablets, with injection sites tracked when you need them.
Compounded, too Log each dose in mg, mcg or units, just as your pharmacy labels it.

Your penguin

Meet your pal. It notices everything.

Name your penguin and it moves into your Today screen. Log a meal, a dose or a glass of water and it reacts. Keep showing up and its hearts stay full. No nagging, no guilt trips, just a small friend who’s always glad to see you.

How PenPal helps

Your whole GLP-1 week, in one friendly app.

Shots, levels, meals, the not-so-fun stuff and the wins. Here’s how PenPal keeps it all in one place.

01 Shot day

Shot day, sorted.

Log your dose in a couple of taps: medication, amount, time and injection site. Set a reminder and PenPal counts down to the next one, so the weekly ritual never sneaks up on you.

PenPal medication screen: next dose in 4 days, Monday at 9:00 AM, on a Monday schedule, and the next injection site, right thigh, on a body map.

02 Medication level

See your estimated medication level.

PenPal turns your logged doses into a curve that estimates how your level rises and fades between shots. It’s an estimate, not a lab result, and a handy picture to bring to your next appointment.

PenPal medication level card estimating 4.9 mg right now and easing, with this cycle’s curve from the last dose to the next.

03 Protein & fiber

Snap a meal. Hit your protein & fiber.

Take a photo of your plate and PenPal’s AI estimates calories, protein, fiber and macros, then scores the meal. You can edit anything it gets wrong. Protein and fiber are the golden rule on a GLP-1, and now they’re easy to keep an eye on.

PenPal meal analysis of a salmon quinoa power bowl: 661 kcal, 46 g protein, 44 g carbs, 35 g fat, with ingredients listed and the penguin cheering.

04 Side effects & sites

The not-so-fun stuff, tracked.

Log nausea, fatigue, reflux and friends in seconds, along with how strong they felt. A body map remembers where each shot went and suggests where to go next, so rotating sites takes zero brainpower.

PenPal body check-in for today, day 4 after the dose: moderate nausea and mild fatigue, above a supply tracking card.

05 Progress & reports

Watch the wins add up.

Weekly Insights line up your weight trend, goal progress, protein, fiber and water, so every win stays in view, on the scale and off it. Before a check-in, export a PDF report for your doctor with exactly the data you choose.

PenPal Insights for this week: weight down to 196 lb on an all-time chart and 49% of the way from 216 lb to a 175 lb goal.

Progress you can feel

Say you’ve lost 20 lb…

PenPal logs your weight, draws the trend and celebrates the milestones on the way. Scroll to play the journey, then drag the ruler to try any number.

20lb Every milestone, passed. Logged, charted and celebrated.

4 lb a 2-liter bottle
9 lb a house cat
11 lb a watermelon
13 lb a bowling ball
15 lb a carry-on suitcase

Streaks & widget

A streak worth keeping. Right on your Home Screen.

Every day you log something, your flame grows and your penguin celebrates with it. Missed a day? The streak freezes instead of breaking, and one log thaws it.

Add the widget and your penguin checks in from the Home Screen, with a new little scene for every part of the day.

PenPal streak screen: a 23-day streak with the penguin beside its flame and this month’s logged days.

1LIFTOFF!
23Not a morning penguin.
23It's evening?!

23STREAK GAINS.
23Thawed! Streak saved!
23Spotted: you. Hi!

23Help, I'm an ice cube.
23THIS IS NOT A DRILL.
23Look who's waiting.

120All hail 120!
23Starry, starry night.
0Ready to hatch a streak?

Rewards

A badge for every little win.

Firsts, streaks and milestones, from your very first shot to a million steps. There’s always one more to unlock, and your pal notices every one.

Pebbles & wardrobe

Earn Pebbles. Dress your pal.

Daily and weekly goals earn Pebbles, the penguin’s favorite currency. Spend them on hats, glasses, outfits and whole new backdrops, from a sunny beach to outer space.

PenPal shop: the penguin above a grid of backgrounds to buy with Pebbles, from the arctic to a beach and a meadow.

Everything else it does

The little things, handled.

Syncs with Apple Health

Steps, workouts, active energy and weight flow in on their own, so there’s less to type and more to celebrate.

Steps
Workouts
Weight

PenPal activity cards: 196 lb current weight, 180 active calories, 6,420 steps and a 35-minute workout.

AI meal logging, with a score

Snap a photo or describe your plate. PenPal estimates protein, fiber and macros, scores the meal and tells you what’s working.

PenPal meal feedback: an Excellent nutrition score of 92 and six meal awards such as Protein Powerhouse and Fiber Rich.

Dose reminders

A heads-up a few hours before each dose, for every medication you track, so shot day never sneaks up on you.

Speaks 29 languages

From English and Spanish to Japanese and Turkish, PenPal feels at home in yours.

A doctor-ready PDF report

Pick the dates and what to include (doses, weight, side effects, nutrition, water, activity) and PenPal builds a clean PDF you can share, only if you want to.

PenPal progress report settings with doses, water, activity, weight, side effects and nutrition included.

Your data stays yours

Your health data is never sold or used for ads. Apple Health data stays on your iPhone, and you can delete your account any time.

FAQ

Questions, answered.

Still wondering about something? Send us a note and we’ll get back to you.

Does PenPal work with Ozempic, Wegovy, Mounjaro or Zepbound?

Yes. PenPal works with semaglutide (Ozempic®, Wegovy®, Rybelsus®), tirzepatide (Mounjaro®, Zepbound®) and liraglutide (Saxenda®). Pick your medication, dose and schedule, and PenPal keeps your shot log, reminders and estimated medication level together.

Can I track compounded semaglutide or tirzepatide?

Yes. Choose compounded semaglutide or tirzepatide and log each dose in mg, mcg or units, the way your pharmacy labels it. PenPal keeps your history in one place. It never converts units or calculates a dose.

How is the medication level estimated?

PenPal combines the doses and times you log with published absorption and half-life values for your medication to draw an estimated level curve. It’s a visual guide for spotting patterns, like when food noise tends to come back. It isn’t a lab measurement, and it’s never a reason to change your dose.

Is PenPal medical advice?

No. PenPal is a tracking companion, not medical advice. It doesn’t diagnose, prescribe or adjust doses. Follow your prescription and care plan, and talk to your clinician about treatment questions or any symptoms that worry you.

Is PenPal free?

PenPal is free to download from the App Store. It also offers an in-app subscription, and Apple shows you the price and any free-trial offer for your region before you confirm anything.

Does PenPal sync with Apple Health?

Yes, if you turn it on. PenPal can bring in steps, workouts, active energy, weight and water from Apple Health, so there’s less to type. Your Apple Health data stays on your iPhone and isn’t uploaded to PenPal’s servers.

Can I share my progress with my doctor?

Yes. Create a PDF progress report for the dates you choose, with your doses, weight, side effects, nutrition, water and activity. You decide whether to share it, and with whom.

How do streaks work?

Every day you log something yourself (a meal, water, your weight, a side effect, a dose or a workout you add), your streak grows. Steps and other data synced from Apple Health don’t count on their own. Miss a day and the streak freezes instead of breaking; log again and it thaws.

Is my health data private?

Yes. We never sell your health data or use it for advertising. Apple Health data stays on your device, and you can delete your account from inside the app whenever you like.

What languages does PenPal speak?

29 of them, including English, Spanish, French, German, Italian, Portuguese, Japanese, Korean, Chinese and Turkish. PenPal follows the language you use on your iPhone.

Learn before you log