PeptideCore vs RetaPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
RetaPro
This app helps users meticulously track their retatrutide treatment. It logs doses, manages vials, calculates reconstitutions, and monitors progress with features like meal logging and weight tracking. Smart reminders ensure no dose is missed.
- Retatrutide dose logging
- Vial volume monitoring
- Reconstitution calculation
- Protocol and cycle tracking
- Personalized meal logging
- Weight and progress photo tracking
- Smart injection reminders
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RetaPro: Your Retatrutide Companion The most complete tracker built exclusively for retatrutide. Log every dose, monitor your vials, calculate reconstitution, and stay on top of your full retatrutide protocol — all in one place. Retatrutide Dose Log & Injection Tracker Log every retatrutide injection with a single tap. Track your dose amount, injection site rotation, and the vial you're drawing from. RetaPro keeps a complete injection log so you always know when your last dose was, how much remains in each vial, and where you injected last. Reconstitution & Vial Calculator Take the guesswork out of retatrutide preparation. RetaPro's built-in peptide calculator helps you calculate reconstitution volumes, BAC water ratios, and exact dose per syringe draw — so every injection is precise. Retatrutide Cycle & Protocol Tracker Track your complete retatrutide protocol over time. Set cycle start dates, log dose escalations, and review your full injection history at a glance. Built for precision, not guesswork. Log Meals Your Way Food logging built for retatrutide users. Search a vast food database, scan barcodes, photograph your plate, or describe your meal by voice. Your daily protein, fiber, water, and calorie targets are calculated specifically for you — based on your body stats, activity level, and treatment plan. Monitor Your Weight & Body Composition Add weight entries manually or sync with Apple Health. Track your trend over time with clear charts, monitor your BMI, and see exactly how your body is responding to your retatrutide treatment. Progress Photos Capture your transformation with in-app progress photos. Compare before and after side-by-side and see the changes your scale doesn't fully capture. Smart Injection Reminders Never miss a dose. RetaPro sends smart reminders when your next retatrutide injection is due, based on your personal dosing schedule. Also get nudges for meals, hydration, and activity. Home Screen Widgets Track your injection status, daily protein, water, and steps without opening the app. Widgets for iOS keep your retatrutide schedule visible at a glance. Key Features - Retatrutide dose log with injection site rotation tracking - Vial tracker: monitor remaining volume across multiple vials - Reconstitution calculator (BAC water, mcg/mg, exact syringe draw) - Retatrutide cycle tracker with full dose history and protocol timeline - Meal logging via search, barcode scan, AI photo recognition, and voice - Personalized protein, fiber, water, and calorie targets - Weight trend charts with BMI tracking - Progress photo timeline with side-by-side comparison - Apple Health integration - Home screen widgets for iOS - Full offline support - Available in 40+ languages RetaPro is a personal tracking tool and is not a medical device. Always follow your healthcare provider's guidance regarding your treatment. Apple Terms of Use Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: PeptideCore at every 3 weeks against RetaPro's every 2 months. RetaPro's advantage is iOS requirement (15.5 vs 26.4). On price, ads, in-app purchases 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 and RetaPro sells 2 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.
PeptideCore ships an update every 3 weeks, RetaPro every 2 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.
| Parameter | PeptideCore | RetaPro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (45 ratings) — better |
| Positive reviews | — | 40.0% of reviews |
| Number of ratings | — | 45 — better |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.4 | 15.5 — better |
| Further details — not scored | ||
| Size | 13 MB | 103 MB |
| Age rating | 12+ | 17+ |
| Developer | Nicolas Rios | Agora Labs Ltda. |
In-app purchases
PeptideCore
- Pro Monthly$12.991 Month
- Pro Yearly$79.991 Year
RetaPro
- Yearly Plan$39.991 Year
- Lifetime Plan$39.99









