Reta vs Stackr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Reta
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TRACK YOUR TRANSFORMATION RETA is the first app designed specifically for retatrutide users. Whether you're taking retatrutide, Ozempic, Wegovy, Mounjaro, Zepbound, or other GLP-1 medications, Reta provides everything you need to track your journey in one beautiful, supportive companion. NEVER MISS A DOSE - Smart weekly injection reminders - Track dose amounts and injection sites - Log notes for each dose - See your complete medication history VISUALIZE YOUR PROGRESS - Beautiful weight tracking charts - Monitor weight loss trends over time - Track total pounds lost and percentage - See progress by dose cycle MONITOR YOUR HEALTH - Weekly side effect check-ins - Track common GLP-1 side effects: nausea, fatigue, appetite changes, and more - Rate severity and add detailed notes - Identify patterns with visual charts - Share comprehensive reports with your doctor NUTRITION & WELLNESS - Daily calorie logging - Track macros: protein, carbs, and fats - Water intake monitoring - Correlate nutrition with weight changes - Build healthy habits alongside medication SEAMLESS APPLE HEALTH INTEGRATION - Sync weight data automatically - Import activity and exercise data - Export medication logs - Keep all your health data in one place PRIVACY FIRST - Your data stays on your device - Secure iCloud sync (your private iCloud only) - We never sell your data to third parties - No account required - Full control over your information WHY RETA? Retatrutide is a revolutionary triple GIP/GLP-1/glucagon agonist showing promising results in clinical trials. While other apps are built for general GLP-1 medications, Reta was designed from the ground up with retatrutide in mind—though it fully supports all GLP-1 medications. BUILT FOR YOUR SUCCESS - Clean, warm, supportive design - No overwhelming features—just what matters - Evidence-based metrics - Regular updates and improvements Questions or feedback Contact us at support@retatrack.health Privacy Policy Here: https://retatrack.health/privacy
Stackr
This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.
- Log peptide and GLP-1 doses
- Track vials, pens, and other supplies
- Smart reminders for next doses
- Home screen widgets
- Estimated active level charts
- Multi-peptide stack tracking
- Reference pages for common compounds
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Stackr is the simplest way to track peptide and GLP-1 dosing. Log every dose. Track vials, pens, tablets, and other containers with how much you have left. Get reminders for your next dose. See how half-life shapes estimated active levels in your stack over time. Built for peptide enthusiasts, GLP-1 users, and anyone who wants their protocol off paper and into an app that understands supplies and dosing cadence — not a generic habit tracker. WHY STACKR • Fast dose logging — log from home or tap the widget when you're in a hurry • Supplies — track what's in the fridge (vials, pens, bottles, sprays, and more) with amounts, low-stock alerts, and typical dose size so "doses left" stays honest • Multi-peptide stacks — run BPC-157 alongside a GLP-1 (or anything else you track) in one place • Active levels — visualize estimated active amount over time from your logged doses and each peptide's half-life (educational estimate, not medical guidance) • Reminders & widgets — next-dose reminders that respect your schedule; home-screen widgets for what's due PEPTIDE LIBRARY Stackr includes reference pages for the most-tracked compounds — semaglutide, tirzepatide, retatrutide, BPC-157, TB-500, MK-677, GHK-Cu, and more. Each page covers typical dosing, half-life, schedule, route, mechanism, and general education. Educational only — Stackr is not medical advice. REMINDERS THAT FIT YOUR PROTOCOL Set reminders aligned with how you dose — daily, every other day, weekly, or custom intervals. Use widgets to see what's next without opening the app. SYNC ACROSS YOUR DEVICES Sign in with Apple or email and your data syncs across iPhone and iPad. Encrypted in transit. Your dosing history stays tied to your account — no ads, no selling data to third parties. BUILT FOR THE PEPTIDE COMMUNITY: By a peptide user, for peptide users. If something's missing, the in-app feedback channel goes straight to the founder. —— Disclaimer: Stackr is for personal tracking only and does not provide medical advice. Consult a qualified healthcare provider before starting or modifying any peptide or pharmaceutical protocol. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ SUBSCRIPTION Stackr is free to download. Full access requires Stackr+, a paid subscription. Estimated level charts, shot planning, home screen widgets, smart reminders, and export reports all require an active Stackr+ subscription and are not available without purchase. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple Account settings.
Screenshots
Verdict
The clearest difference is in-app purchases: Reta at none against Stackr's 7. On price, ads, device support 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. Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Reta asks for nothing beyond the download.
| Parameter | Reta | Stackr |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (126 ratings) — better |
| Positive reviews | — | 78.3% of reviews |
| Number of ratings | — | 126 — better |
| Update frequency | — | Every 3 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 14 MB | 58 MB |
| Age rating | 4+ | 12+ |
| Developer | Martini Holdings LLC | Stackr Holdings LLC |
In-app purchases
Reta
No in-app purchases
Stackr
- Stackr+ Weekly$7.997 Days
- Monthly$12.991 Month
- Stackr+ Yearly$29.991 Year
Show 4 moreShow fewer
- Stackr+ Yearly$49.991 Year
- Stackr+ Yearly3 Days trial$49.991 Year
- Stackr+ Yearly$59.991 Year
- Yearly3 Days trial$69.991 Year









