Peptalog vs Protokol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Peptalog
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Peptalog is the personal tracking and research journal built for peptide users who want every part of their protocol organized in one private, offline-first app. • LOG ENTRIES Record every entry with timestamp, site rotation, and notes. Build a complete history with one tap. • MANAGE VIALS Keep a private inventory of every vial — lot number, reconstitution date, storage temperature, expiration warnings, and remaining amount. Scan barcodes, attach photos, and never lose track of what's left. • FOLLOW PROTOCOLS Build cycling schedules with tiered ramp-ups, taper-downs, and rest weeks. Get reminders for upcoming entries and clear status when something gets skipped. • RESEARCH LIBRARY Browse a curated database of peptides with mechanism summaries, half-lives, common stack patterns, and links to source studies. • BLOODWORK TRACKING Log blood marker results over time and view them on charts so you can correlate changes with your protocol. • LEVEL CHART Visualize estimated peptide concentration across the last 24 hours from your tracked entries and known half-lives — purely informational, helpful for timing. PRIVATE BY DESIGN • Encrypted local storage on your device • Optional end-to-end encrypted cloud sync • Biometric lock (Face ID / Touch ID) • Export your data anytime as JSON • Delete your account and all data with one tap DISCLAIMER Peptalog is a personal tracking, research, and educational journal. It does NOT provide medical advice, diagnosis, recommendations, or instructions. The Solution Calculator is a generic unit-conversion tool, not a drug dosage calculator. Always consult a qualified healthcare professional before starting, changing, or stopping any protocol. Not for medical use, or for human or animal consumption. PEPTOLOG PREMIUM Peptolog requires an active Peptolog Premium subscription to access the features described above. Choose from: • Peptolog Monthly • Peptolog Annual (best value) Pricing is shown in the app at the time of purchase. Payment is charged to your Apple ID account at confirmation. Subscriptions automatically renew at the same price and duration unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. Manage or cancel subscriptions in your Apple ID account settings on the App Store after purchase. TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Protokol
This educational tool helps adults learn about research peptides with a guided onboarding, a library of peptide information, and tools for calculating doses and conversions. It also features a private journal for logging activities and wellness check-ins, and an AI assistant for research-related questions.
- Guided onboarding for personalized research summaries
- Library of 19 research peptides with summaries
- Dose and reconstitution math calculators
- Syringe unit conversions
- Private local-first journal for logging
- AI research assistant
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Protokol keeps your peptide routine organized in one place — your schedule, your logs, and clear educational reference material, without spreadsheets or scattered notes. HOW IT WORKS Answer a few questions about your goals and experience level, and Protokol matches you with compounds the published research relates to your goals. You set your own schedule — which days, how often — and enter the amounts you're using. Protokol keeps the record and reminds you. WHAT'S INSIDE • Your Own Schedule — pick the compounds, days, and amounts yourself; Protokol never calculates or suggests them • Injection Logging — record what you took, when, and where, in a few taps • Compound Library — research-based reference information on peptides, mechanism, safety, and regulatory status, with published sources you can open and read • Scientific References — every compound and article links to the peer-reviewed studies, FDA notices, and clinical guidance behind it • Mixing & Storage Guides — step-by-step articles on reconstitution technique, syringe types, storage and travel, with listen-aloud audio • Daily Tracking — wellness check-ins and progress photos, private and secure • Protokol AI — ask general questions about peptides, storage, and research anytime, always with a source IMPORTANT Protokol does not calculate, suggest, or display doses or schedules. Every amount and every schedule in the app is entered by you. The Compound Library shows mechanism, safety information, and published sources — never a dose range or regimen. Protokol AI will not tell you what to take, how much, or how often; it cites its sources and points you to a licensed clinician. Nothing in Protokol is medical advice. Some of the features above require a Protokol Premium subscription. Pricing and terms are shown in the app before you subscribe. BUILT FOR BEGINNERS Protokol is designed for people who are new to peptide research and want a straightforward, organized way to keep track of what they're doing. Your data stays private and secure. A free account is required to use Protokol, so your schedule and progress stay saved and synced. SUBSCRIPTION Protokol Premium is an auto-renewing subscription — Monthly, or Annual with a 3-day free trial. The price and billing period are shown in the app before you buy. Payment is charged to your Apple ID at confirmation. Subscriptions auto-renew unless canceled at least 24 hours before the current period ends. Manage or cancel anytime in your Apple ID settings. Terms of Use (EULA): https://protokolapp.com/terms Privacy Policy: https://protokolapp.com/privacy Protokol provides general research and organizational information only and does not offer medical advice. It is not a medical device and does not provide dosing guidance. Always consult a licensed healthcare provider.
Screenshots
Verdict
The clearest difference is update cadence: Protokol at every 3 days against Peptalog's every 3 months. 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. Peptalog sells 4 in-app purchases, starting at $3.99 per 7 days and Protokol sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Peptalog ships an update every 3 months, Protokol every 3 days. The most recent releases landed on September 19, 2026 and September 16, 2026 respectively.
| Parameter | Peptalog | Protokol |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (15 ratings) — better |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | — | 15 — better |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 62 MB | 48 MB |
| Age rating | 4+ | 17+ |
| Developer | Mateo Delonga | Lukas LeChau |
In-app purchases
Peptalog
- Peptalog Premium Weekly$3.997 Days
- Peptalog Premium Monthly3 Days trial$9.991 Month
- Peptalog Premium Annual7 Days trial$44.991 Year
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- Peptalog Premium Annual3 Days trial$49.991 Year
Protokol
- Protokol Premium$4.991 Month
- Protokol Premium$9.991 Month
- Protokol Premium3 Days trial$39.991 Year
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- Protokol Premium3 Days trial$59.991 Year
- protokol_annual3 Days trial$69.991 Year
- Protokol Lifetime$99.99





