PenPal vs DoseWeek
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PenPal
Track your GLP-1 medication journey, including injections, weight changes, and wellbeing. Generate reports for your doctor and gain insights into your progress. Earn badges for achievements and sync data across devices.
- Log injections with site and dose
- Track weight and set goals
- Monitor appetite, energy, and symptoms
- Generate PDF reports for doctors
- Smart injection reminders
- Rotation tracking for injection sites
- Earn achievement badges
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Your Shots. Your Progress. Your Next Appointment. PenPal helps people using Ozempic, Wegovy, Mounjaro, and Zepbound keep a clear record of their GLP-1 journey, during injections and after they stop. LESS TO REMEMBER, MORE TO BRING TO YOUR CARE TEAM - Log weight and injections directly from your dashboard - Create a PDF report of recorded doses and weight changes for your next appointment - Pick the last 30 days, last 90 days, all history, or your own dates - Preview before sharing; injection notes are included only when you choose - Export CSV files for your own records INJECTION TRACKING - Never miss a dose - Log injections with date, time, dose, and injection site - Smart reminders - Know exactly when your next injection is due - Rotation tracking - Keep track of injection sites (abdomen, thigh, upper arm, deltoid) - Dose progression - Follow the recommended escalation schedule for your medication BEYOND THE SCALE - Check in with appetite, energy, symptoms, and small wins during treatment and after stopping - Free seven-day wellbeing recap, editable history, and CSV export, with no streak to lose - Premium adds 30- and 90-day wellbeing recaps WEIGHT MANAGEMENT - Easy logging - Quick-entry buttons make logging your weight fast - Goal tracking - Set a target weight and timeframe, then watch your progress - Healthy rate guidance - Know if you're losing at a sustainable pace SMART INSIGHTS See what changed, with the evidence behind it: - Your weekly picture - Compare average weight with the previous week - Beyond the scale - Put appetite and energy changes beside your weight - Discover connections - Recurring links between appetite, energy, next-day weight changes, and injection cycles - Clear evidence - See how many days support each comparison; exploratory patterns show their limits and never recommend dose changes - Phase-aware observations - Insights adapt during treatment, after stopping, and when reviewing past journeys EARN BADGES AS YOU GO Your Trophy Case fills up from the records you already keep: - 28 badges for doses logged, days recorded, check-ins, personal wins, appointment reports, percent lost, goal milestones, and holding steady at the Summit - Every badge shows exactly what earns it, and how close you are - Share any badge as a card MEDICATION SCIENCE - Residual level chart - See estimated medication levels in your system over time - Half-life tracking - Semaglutide (7 days) and Tirzepatide (5 days) decay curves APPLE HEALTH INTEGRATION - Import weight from Apple Health automatically, and export weight entries back to Health - Sync height during onboarding for accurate BMI calculations ICLOUD SYNC - Secure backup and multi-device sync across iPhone, iPad, Mac, and Apple Vision Pro - Keep data local-only if you prefer WIDGETS - Next Injection countdown and Residual Level on your Home Screen and Lock Screen CUSTOMIZABLE DASHBOARD - Reorder, show, or hide cards so you only see what matters JOURNEY MANAGEMENT - Switched medications? Start a new journey while keeping your full history - Compare progress across treatments, and archive completed ones with reasons and notes KEEP TRACKING AFTER YOUR LAST INJECTION Summit helps you follow your weight after a journey ends: - See your weight trend relative to your Summit weight - Set your Hold-band and weigh-in reminder cadence PRIVACY FIRST - Your data stays on your device and in your personal iCloud account - We never see, collect, or share your health information - No ads, no analytics, no tracking GETTING STARTED PenPal is free to get started with your first 4 injections. Upgrade to Premium for unlimited tracking and full access to all features. Take a guided tour with demo data before entering your own information. PenPal is a tracking tool and does not provide medical advice. Always consult your healthcare provider about your treatment. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
DoseWeek
This app is a private, manual log for tracking injection therapy schedules, doses taken, side effects, and body changes. It offers customizable cycle lengths and intervals, with all data stored locally and encrypted for user control. Optional on-device AI features assist with data entry and visit preparation.
- Track injection schedules
- Log doses taken and locations
- Record side effects and body changes
- Customizable cycle lengths (1-90 days)
- Flexible dosing intervals
- Private, on-device data storage
- Encrypted backups controlled by user
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Keep your injection schedule and records in one place, including GLP-1 medicines such as Mounjaro (tirzepatide) and Wegovy or Ozempic (semaglutide), plus weight and meals. Keep records locally without signing in. Free includes: repeat intervals or up to 60 dates in a year; confirmed injections, sites and symptoms; supplies; weight and body charts (whole weight history); meals and favorites; adding past injections at once; CSV/TSV import; CSV/PDF visit reports; widgets; app lock; encrypted file backup and restore. Review imported rows and drafts before saving. Optional calendar sync sends only titles and times, never medicine, dose, site or notes. In Together you can share posts with others after signing in, with filtering, reporting and blocking. New: one-tap water log, daily check-in, weekly recap, progress photos kept on this device, wins beyond the scale, and Reading and quizzes (guides and a daily quiz). Add your own injections (name, unit, schedule). Apple Watch: see your next injection and how long since your last one, in the app and on your watch face. With Plus or Pro, record a dose from the watch. Optional Apple Health import is read-only and never writes to Apple Health. File backups use AES-256-GCM and a recovery code. Food labels are read on the device, and Apple Intelligence drafts are created on the device where supported. Manual entry is always available. Optional monthly or annual Plus removes ads and adds weekly reports and milestones, side-effect patterns and weight goal and trend estimates. Plus also includes end-to-end encrypted sync across devices and server backup. You can also choose app themes and Today layouts. Optional monthly or annual Pro includes everything in Plus, a visit report PDF with charts, comparisons and a rolling 12-month view, supply forecasts and refill reminders, custom widget colors and layouts, meal templates and the AI record assistant: up to 150 requests a month for a weekly summary, general meal ideas and help using the app. It asks before each send. AI notes and the AI record assistant are optional and need sign-in and separate consent. Free gets one AI motivation note a week; other notes, like Today’s note, are made on your device. AI gives no medical advice and may be wrong. What is sent to AI goes to Gemini on Google Cloud Vertex AI (Global): the processing country can change with each request, and this content is outside end-to-end encryption. Sign in with Apple or Google is optional. Sync requires separate health-data consent and device encryption; the server cannot read health records or the recovery code. On a new device, enter the code and review the merge. You can withdraw sync consent at any time. Account deletion does not cancel store billing. Free shows non-personalized ads, never while recording; DoseWeek doesn't use your device's advertising identifier. Once per calendar month (UTC), an optional rewarded ad can unlock 7 days of Plus after server verification, with no automatic billing. App quality and stability analytics (Google Firebase) is optional, asked apart from the required service notice and can be changed in Settings. It never receives health values, record content or an advertising ID, and ads are not personalized. Estimated amount remaining in the body (mg) is for reference only, not medical advice. Goal dates and side-effect patterns use recorded data and appear only with enough records; no dose or timing advice, cause conclusions or safety predictions. DoseWeek is not a medical device. It does not diagnose, treat, cure or prevent disease. Consult a qualified healthcare professional for medication, dose, timing or missed-dose decisions. Terms of Use: https://doseweek-legal.wonyoungchoi.dev/terms/ Privacy Policy: https://doseweek-legal.wonyoungchoi.dev/privacy/
Screenshots
Verdict
The clearest difference is ads: PenPal at none against DoseWeek's shown. PenPal also leads on monetization model (freemium vs paid). DoseWeek's advantage is update cadence (every 5 days vs every 2 weeks) and device support (3 vs 1). On price, in-app purchases and iOS requirement 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. PenPal sells 2 in-app purchases, starting at $6.99 per month and DoseWeek sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
PenPal ships an update every 2 weeks, DoseWeek every 5 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.
| Parameter | PenPal | DoseWeek |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 87.5% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium — better | Paid |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 26.2 — better | 27.0 |
| Further details — not scored | ||
| Size | 11 MB | 96 MB |
| Age rating | 4+ | 17+ |
| Developer | 敏 张 | Wonyoung Labs |
In-app purchases
PenPal
- PenPal Buddy Monthly$6.991 Month
- PenPal Annual$29.991 Year
DoseWeek
- DoseWeek Plus Monthly1 Month trial$1.991 Month
- DoseWeek Pro Monthly7 Days trial$4.991 Month
- DoseWeek Plus Annual1 Month trial$13.991 Year
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- DoseWeek Pro Annual7 Days trial$34.991 Year









