Peptide AI vs Protocol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Peptide AI
Track peptide injections, doses, weight, and side effects with this comprehensive tool. It supports popular GLP-1 medications and integrates with Apple Health for a holistic view of your progress. This app is an organizational aid, not a source of medical advice.
- Track injections and doses
- Log weight and side effects
- Monitor progress trends
- Manage reminders
- Integrate with Apple Health
- Support for GLP-1 medications
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Peptide AI is a peptide tracker built for GLP-1s and broader peptide use. Track injections, doses, weight, side effects, notes, and progress in one place. Supports popular GLP-1 medications like Zepbound, Wegovy, Ozempic, and Mounjaro. A paid Peptide AI Pro subscription is required to access the app. Inside the app, members use the Home tab to log injections, nutrition, hydration, side effects, and daily notes; the Results tab to review weight and progress trends; and the Profile tab to manage reminders, Apple Health settings, and account preferences. Peptide AI can read Apple Health data such as weight, sleep, heart rate, steps, water, and nutrition, and can write manual weight entries and logged injections back to Apple Health when enabled. Peptide AI is an organizational and tracking tool, not medical advice. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://peptide-ai.app/privacy
Protocol
This app helps users meticulously track peptide cycles, logging each injection with customizable details. It provides comprehensive guides on reconstitution, injection techniques, and safety, alongside personalized reminders and progress tracking.
- Log peptide injections with customizable details
- Curated library of 25+ compounds
- Add custom compounds and edit entries
- Streak counter and dose history
- Per-peptide reminders with native iOS notifications
- Built-in safety and how-to guides
- Personalized onboarding based on goals and experience
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Protocol is the ultimate lab app for your peptide cycles — a premium iOS tracker for people who treat their stack seriously. Log every injection in micrograms, ride the streak, and keep your reconstitution, injection technique, and safety guides one tap away. WHAT YOU CAN DO Build your stack - Add from a curated library of 25+ compounds: BPC-157, TB-500, Tirzepatide, Cagrilintide, Retatrutide, Semaglutide, GHK-Cu, CJC-1295 (no DAC), Ipamorelin, Sermorelin, Tesamorelin, NAD+, MOTS-c, Humanin, SS-31, AOD-9604, Pinealon, Selank, Semax, DSIP, PT-141, KPV, Thymosin alpha-1, VIP, SLU-PP-332. - Configure each entry: dose amount in micrograms, milligrams, or IU; frequency (daily, every other day, twice daily, post-workout, weekly, custom); a color tag; private notes. - Add custom compounds outside the library. Edit or pause any entry at any time. Log doses in one tap - The Today screen shows your full stack. Tap "Log" — the dose is recorded with the right amount, unit, and timestamp. - Mistapped? Undo the last log instantly. - A day badge shows how many doses you've taken for each peptide today (×1, ×2, ×3). Streaks and history - Streak counter on Today and Profile counts consecutive days with at least one dose. - "This week" and "All time" totals sit next to the streak. - Pull to refresh; everything syncs to the cloud the moment you tap. Reminders that match real protocols - Per-peptide reminders: pick times of day, days of week, AM/PM windows, post-workout cues. - Native iOS notifications, respectful of Do Not Disturb and Focus modes. - The Notifications screen logs every reminder fire and streak milestone in one feed. Built-in safety and how-to guide - 10 in-app chapters written for the peptide-curious and the long-cycle stacker: • Important disclaimer — what this app is and isn't • Your first cycle — where to start • Reconstitution — mixing lyophilized peptides safely • Injection technique (subQ) in 6 steps • Storage & shelf life — lyophilized vs reconstituted • Side effects — common, rare, and red flags • Stacking & cycling — combinations that make sense • Bloodwork to monitor — what to test and when • Sourcing & purity — how to verify what you're injecting • Legal status — know what's allowed where you live Tailored from day one - Onboarding asks two questions: what are you here for (recovery, longevity, performance, GH, cognitive, metabolic, sleep, sexual, immune, skin, weight loss) and your experience level (new, some experience, advanced). - Library and protocol suggestions adjust accordingly. Edit goals & experience anytime from your profile. Profile and identity - Display name, handle, bio, avatar. - At-a-glance stats: total doses logged, current streak, active goals. - Sign in with Email or Google. Privacy-first — no social feed, no public timeline, no follower count. WHAT'S INTENTIONAL - No ads, no social feed, no in-app purchases inside the tracker. - Your data stays yours. WHO IT'S FOR - People running 1–5 compounds at a time who keep their dose log in Notes and forget which vial they're three days into. - First-cycle users who want a clean reference for reconstitution and injection technique before they self-experiment. - Long-cycle stackers who want streaks, weekly volume, and full historical doses on tap. DISCLAIMER Peptide is a tracking and reference tool, not a medical device. Nothing in the app is medical advice or a prescription. Consult a qualified physician before starting any protocol. TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is monetization model: Protocol at free against Peptide AI's subscription. Protocol also leads on update cadence (every 2 days vs weekly) and rating (5.0 vs 4.8). Peptide AI's advantage is ratings volume (26 vs 1) and iOS requirement (15.1 vs 17.5). 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. Peptide AI sells 2 in-app purchases, starting at $14.99 per month and Protocol sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Protocol holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Peptide AI has 26 ratings behind it against 1, so its average is the more settled of the two.
Peptide AI ships an update weekly, Protocol every 2 days. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.
| Parameter | Peptide AI | Protocol |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (26 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 26 — better | 1 |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.5 |
| Further details — not scored | ||
| Size | 88 MB | 47 MB |
| Age rating | 12+ | 12+ |
| Developer | Incubator LLC | Alexandre Masmejean |
In-app purchases
Peptide AI
- Peptide AI Pro Monthly$14.991 Month
- Peptide AI Pro Yearly3 Days trial$54.991 Year
Protocol
- Protocol Pro7 Days trial$1.997 Days
- Protocol Pro1 Year trial$39.991 Year









