DosePen vs GLP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DosePen
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Track your GLP-1 weight loss journey simply and visually. DosePen is the most intuitive tracker for people taking medications like semaglutide, tirzepatide, or liraglutide for weight loss. Log doses, track your weight, and monitor side effects. All in one place, all on your phone, no account or internet needed. INJECTION SITE BODY MAP Tap the exact injection site on a visual body map. See where your last dose was, when each site was last used, and get automatic rotation suggestions to avoid lipodystrophy. 10 injection points with full history. QUICK DOSE LOGGING Log a dose in under 15 seconds. Select your medication, tap the dose, choose the site on the body map, and done. No long forms, no unnecessary fields. The app remembers your usual dose and suggests the next site. PROGRESS CHARTS Visualize your weight loss with clear, intuitive charts. See weekly trends, track your progress over time, and compare against your goal. Beautiful charts built with Swift Charts. SIDE EFFECTS Log nausea, fatigue, headache, dizziness, constipation, and other common GLP-1 symptoms with severity levels (mild, moderate, severe). See correlations between dose changes and side effect onset over time. PROGRESS PHOTOS Capture progress photos and compare your transformation side by side. Visual timeline gallery showing your journey alongside weight data. SMART DASHBOARD Your dashboard adapts to your day. Shows when it's dose day, whether you've logged, if you missed a dose, and how long until the next one. Clear information without confusion. DOCTOR REPORT Export a professional PDF with your complete dose, weight, and side effect history to show at your next appointment. Organized, easy-to-read data. REMINDERS Set reminders for injection day. Local notifications, no server, no delay. COMPATIBLE WITH MAJOR GLP-1 MEDICATIONS Works with semaglutide (including brands like Ozempic and Wegovy), tirzepatide (Mounjaro), liraglutide (Saxenda), and more. Supports both injectable pen and oral tablet medications. PERSONALIZE YOUR TRACKER Choose from 4 beautiful themes. Teal (free) plus Lavender, Steel, and Midnight with Premium. Each with a matching alternate app icon for your Home Screen. Your tracker, your style. BUILT FOR iPHONE Native iOS app with SwiftUI, Swift Charts, and on-device SwiftData storage. Fast, responsive, and fully offline. No account required. TOTAL PRIVACY All your data stays on your phone only. No account, no server, no health data sent anywhere. What happens in the app, stays in the app. PAY ONCE, USE FOREVER While other apps charge annual subscriptions, DosePen offers lifetime premium access for a fraction of the price. Start free with unlimited dose logging. Unlock premium when you're ready, no recurring commitment. FREE: • Unlimited dose logging • Weight logging (7 days) • Basic dashboard with next dose • Injection reminders • Body map (current site) PREMIUM (LIFETIME): • Unlimited full history • Trend charts • Insights and correlations • Side effect trends • Body map history + rotation suggestions • Progress photos + comparison • Export PDF for doctor MEDICAL DISCLAIMER This app is for personal tracking and does not provide medical advice. It is not intended to diagnose, treat, cure, or prevent any disease. Always follow your doctor's guidance. Medical Disclaimer: https://canetinhas.s3.eu-west-2.amazonaws.com/legal/disclaimer-en.html Privacy Policy: https://canetinhas.s3.eu-west-2.amazonaws.com/legal/privacy-policy-en.html Terms of Use (EULA): https://canetinhas.s3.eu-west-2.amazonaws.com/legal/terms-of-use-en.html
GLP
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Doseline keeps the record of a GLP-1 treatment: every dose, the estimated level in your body, where you are in your titration, and what is left in the pen or vial. No account, no login. Your records stay on your iPhone. EVERY DOSE, ON THE RECORD • Amount, date, time, injection site and a note, in a few taps • Any increment, including 0.25 mg steps and half doses • Using a compounded vial? Record the units on your prescription label alongside the dose • Branded pen, auto-injector, vial or pill — the record fits the way you take it ESTIMATED MEDICATION LEVEL An exponential decay curve built from published half-lives, so you can see the drug accumulate over your first weeks and fall away toward the end of each one. Shown with its source and a plain note that it is an estimate. TITRATION YOU CAN SEE How long you have been on this step, when the next one is due, and the whole ladder for your medication. Doseline records the step you are on. It never tells you to change it. WHY A DOSE CHANGED Record why you stepped up, stepped down, or deliberately held — in your own words, from your own choice. Nothing is guessed, and it goes in the report for your doctor. EVERY DAY, ON A CALENDAR Six weeks in already? Add all six. Tap any day on the calendar to see or fill in its dose, level, weight, protein, water, symptoms, tape, mood and steps. Everything stays editable, and the level curve and titration recompute. SUPPLY AND REFILL ALERTS Doseline counts what is left in milligrams, not in doses taken, so stepping up mid-vial is counted properly. It tells you how many doses remain and when to reorder. SIDE EFFECTS AGAINST YOUR DOSE CYCLE Log a symptom in a few taps and see where it falls in your week. "Most often on day 2 after your shot" is an observation about your own record, and Doseline says nothing until there is enough of it. WEIGHT, MEASUREMENTS, PROTEIN AND WATER Weight with a goal, and waist, hips, chest, arm, thigh and neck on tape. Protein and water are simple counters, because muscle is the thing worth protecting on this drug. No food database, no scoring your meals, and no target Doseline invented for you — the number is yours or there isn't one. INJECTION SITES Log where each shot went and see the rotation on a body map. The next suggestion is the site that has rested longest. PROGRESS PHOTOS The same pose, months apart, side by side. Behind Face ID and only on this phone. HOME SCREEN WIDGETS A countdown to your next dose, free. With Pro, a second widget shows your estimated level. EXPORT YOUR RECORD CSVs of every dose, weight, measurement, side effect and intake entry, free and unlimited: no subscription stands between you and your own record. A PDF summary written for your doctor is free three times, and unlimited with Pro. PRIVACY No account, no server of ours, no analytics. Your health data is never uploaded. It lives on your phone and in your own encrypted iCloud backup. INJECTIONS AND PILLS Semaglutide, tirzepatide, liraglutide, dulaglutide and the oral GLP-1s, branded or compounded. Ozempic®, Wegovy®, Mounjaro®, Zepbound®, Saxenda®, Victoza®, Rybelsus®, Trulicity® and Foundayo® are all in the medication list, and switching between them keeps your history intact. DOSELINE PRO Everything above is free except as noted. Pro is a yearly subscription that adds the archive of past treatments, the weekly review, the level widget, unlimited doctor's PDFs with charts, and the app icon and colour options. The record, its CSVs and the level curve are never behind Pro. Doseline is a record-keeping tool for your own data. It does not provide medical advice, diagnosis, or dosing recommendations, and it does not calculate doses. Always follow your prescriber's instructions. All trademarks are the property of their respective owners. Doseline is not affiliated with, endorsed by, or sponsored by Novo Nordisk or Eli Lilly. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: GLP at 15.1 against DosePen's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. DosePen sells 2 in-app purchases, starting at $5.99 per 7 days and GLP sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.
DosePen ships an update weekly, GLP fortnightly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | DosePen | GLP |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 19 MB | 66 MB |
| Age rating | 4+ | 12+ |
| Developer | FAT FIRE APPS | SERKAN SAYHAN |
In-app purchases
DosePen
- DosePen Weekly Premium3 Days trial$5.997 Days
- DosePen Premium$29.99
GLP
- Doseline Pro3 Days trial$9.991 Year
- Doseline Pro7 Days trial$19.991 Year









