Reta vs PeptideCore
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
PeptideCore
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The most complete protocol tracker for serious GLP-1 and peptide users. Track Ozempic®, Wegovy®, Mounjaro®, Zepbound® — or any peptide stack — with pharmacokinetic curves, a stack-interaction checker, and a citation-backed library no other tracker offers. PeptideCore is the private, on-device companion for GLP-1 patients, peptide stackers, microdosers, and biohackers who want a clean visual record of every shot, dose, and side effect. No ads. No data sold. No bro-science. Built by an iOS engineer who tracks their own protocol. FREE TO USE Log every dose, rotate injection sites, run the reconstitution calculator, and browse the peptide library — free, no account required. PeptideCore Pro is optional. WHAT YOU GET WITH PRO • Estimated medication-level curve. See how semaglutide, tirzepatide, retatrutide, or any peptide with a known half-life decays over the past week — with peak and trough markers. • Visual injection-site map. Front and back body view with 14 sites. Each site color-codes by days since last use so you rotate intelligently. • Dose-coded weight chart. Your weight line is colored by current dose tier so the weight loss response to your Mounjaro® or Wegovy® titration is visible at a glance. • Reconstitution calculator. Forward (dose → units), reverse (target draw → BAC water), and multi-peptide blend modes. Supports U-100, U-40, and tuberculin syringes. • Curated peptide library. 25+ entries with typical dose, half-life, route, and a tap-through PubMed citation. Covers BPC-157, TB-500, CJC-1295, Ipamorelin, MOTS-c, GHK-Cu, PT-141, Tesamorelin, and more. • Stack interaction checker. Flags overlap between active compounds with severity grading and PubMed-linked citations. • Inventory tracking. Vial-by-vial stock with expiry dates, reorder reminders, lot numbers, and cost per dose. • Live Activity countdown. Your next shot lives on your lock screen and Dynamic Island. • Apple Health integration. Pulls weight, HRV, sleep, and resting heart rate to correlate with your protocol. • Private on-device AI. Apple Intelligence flags adherence trends, symptom patterns, and site rotation balance — without sending your data anywhere. • Share card export. Render a branded progress card to celebrate weekly wins. SUBSCRIPTION PRICING • Pro Monthly — $12.99/month • Pro Yearly — $79.99/year (save 48%) Payment is charged to your Apple ID at purchase confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. PRIVACY-FIRST Your protocol data is stored locally and synced through your private iCloud account. We never sell, share, or send your data to ad networks. Apple Health is read-only. WHO IT IS FOR GLP-1 patients on Ozempic®, Wegovy®, Mounjaro®, Zepbound®, Rybelsus®, Saxenda®. Researchers logging BPC-157, TB-500, CJC-1295, Ipamorelin, Tesamorelin, MOTS-c. Microdosers tracking sub-clinical doses. Anyone who wants their protocol on their own device. DISCLAIMER PeptideCore is for tracking and education only. It does not diagnose, treat, or replace medical advice. Always work with a licensed clinician on dosing decisions. All product names, logos, and brands are property of their respective owners. PeptideCore is an independent tracking tool and is not affiliated with, endorsed by, or sponsored by Novo Nordisk, Eli Lilly, or any pharmaceutical manufacturer. LEGAL Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://gist.github.com/NicolasR27/04208c6bb1bc0e7d037aa792247f5bcc
Screenshots
Verdict
The clearest difference is in-app purchases: Reta at none against PeptideCore's 2. Reta also leads on iOS requirement (17.0 vs 26.4). On price, ads and device support 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. PeptideCore sells 2 in-app purchases, starting at $12.99 per month. Reta asks for nothing beyond the download.
| Parameter | Reta | PeptideCore |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 26.4 |
| Further details — not scored | ||
| Size | 14 MB | 13 MB |
| Age rating | 4+ | 12+ |
| Developer | Martini Holdings LLC | Nicolas Rios |
In-app purchases
Reta
No in-app purchases
PeptideCore
- Pro Monthly$12.991 Month
- Pro Yearly$79.991 Year








