Fastinja vs Polypep
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Fastinja
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Fastinja: Simple. Private. No Nonsense. Fastinja is a lightweight, privacy-focused tool designed to help you track your fasting windows, hydration, weight, and mood without the noise of subscriptions, ads or data tracing and harvesting. Why choose Fastinja? - Privacy-First: No accounts. No cloud servers. No data harvesting. Everything you log stays exclusively on your phone. - Instant Start: No onboarding interrogation. Download the app and start your first fast in seconds. - Offline by Design: No internet connection required. Your data is yours, forever. - No Subscriptions: One-time access to a clean, focused experience. No monthly fees, ever. Key Features: - Circular Fasting Timer: A beautiful, high-resolution view of your progress, goals, and logs in one glance. - Smart History: Visualize your journey. Review past fasts to see which goals you met. - Hydration Log: Customize your drink typesβwater, black coffee, or teaβand stay hydrated. - Weight Trends: Track your body transformation with clean charts focused on long-term progress (kg/lbs). - Mood Tracking: Fasting affects the mind and body. Log how you feel to find the fasting window that maximizes your energy and mental clarity. - Full Data Ownership: Export your entire history to a JSON file for manual backups or to move your data to a new device. A Healthier You, A More Private World. Fastinja is designed for those who want a professional tool for Intermittent Fasting (IF) without giving up their personal privacy. Whether you are doing 16:8, OMAD, or custom fasting windows, Fastinja provides the precision you need. Disclaimer: Fastinja is a tracking tool and does not provide medical advice. Consult a healthcare professional before starting any new fasting routine.
Polypep
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Keep your peptide dose log, vial inventory and protocol schedules together with Polypep. Track your routines and explore educational reference material in one place. LOG EVERY DOSE Record the peptide, amount, injection site and time. Review doses, notes, side effects and biomarker readings on your Journey timeline. KNOW YOUR STOCK Track vials and powder lots, record reconstitution and see how long your supply may last. Logging a dose updates the vial it came from. ORGANIZE YOUR PROTOCOLS Use a preset or create your own protocol. See your planned doses in daily, weekly and monthly schedules, with reminders and a history you can backfill. LEARN AND FOLLOW TRENDS Browse peptide reference cards and guides covering reconstitution, storage, syringe units and bloodwork. Log biomarkers and view their trends alongside your records. Educational reference only. OPTIONAL ACCOUNT AND COACH Use the app without an account, or sign in to sync your personal records privately across your own devices. Browse and share community protocol recipes. Ultimate adds Coach, an optional AI assistant for educational arithmetic, stock checks and organizing records. You control which tools it can use. When you use Coach, your messages and results from enabled tools are sent to a third-party AI provider. Writes ask for approval by default. FREE, PRO AND ULTIMATE Free includes dose logging, catalog browsing and one active protocol. Pro adds stock, custom peptides and protocols, unlimited active protocols, full reference entries, guides, schedules, Journey, biomarkers and side-effect logging. Ultimate includes Pro and Coach. EDUCATIONAL ONLY Polypep does not provide medical advice, diagnosis or treatment. Many compounds referenced are research chemicals or prescription-only medicines. Consult a licensed clinician before starting, changing or stopping any compound. Paid subscriptions renew until cancelled and are managed through your App Store account. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getpolypep.com/legal
Screenshots
Verdict
The clearest difference is in-app purchases: Fastinja at none against Polypep's 4. Fastinja also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Polypep sells 4 in-app purchases, starting at $6.99 per month. Fastinja asks for nothing beyond the download.
| Parameter | Fastinja | Polypep |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Every 3 days |
| Ads | No β better | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.1 β better | 17.0 |
| Further details β not scored | ||
| Size | 28 MB | 71 MB |
| Age rating | 17+ | 12+ |
| Developer | Pawel Bednarski | Dal Rupnik |
In-app purchases
Fastinja
No in-app purchases
Polypep
- Pro Monthly3 Days trial$6.991 Month
- Ultimate Monthly3 Days trial$14.991 Month
- Pro Yearly7 Days trial$49.991 Year
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- Ultimate Yearly7 Days trial$99.991 Year









