Comparison

Polypep vs Fastory

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Polypep

Features
Read full description

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

About

Fastory

This app offers personalized intermittent fasting guidance with an AI coach that analyzes your health data. It provides tailored insights, progress tracking, and flexible fasting timers to help you build healthy habits. Integrates with Apple Health and offers convenient widgets for at-a-glance updates.

Highlights
  • Personal AI Coach
  • AI insights after each fast
  • Flexible fasting timer
  • Weight & BMI tracking
  • Daily journal
  • Apple Health integration
  • Home Screen widgets
Features
Read full description

Fastory is intermittent fasting with a personal AI coach — not generic articles, but advice written from YOUR data. Start a 7-day free trial. WHY FASTORY • Personal AI Coach — chat anytime. It reads your fasting history, weight trend, hydration and journal, then answers in your language. • AI insight after every fast — a tailored takeaway the moment you finish, powered by GPT, not a canned tip. • Weekly & Monthly AI Reviews — your progress recapped with concrete next steps. TRACK EVERYTHING • Flexible fasting timer with stages — 14:10, 16:8, 18:6, 20:4, OMAD, 36h or custom. • Goal-reached celebration, eating-window reminders and smart stage notifications. • Weight & BMI tracking with goal progress and clean charts. • Daily journal — mood, body symptoms, meals, photos and notes. • Stats — total fasting hours, streaks, mood trends and pattern insights. • Guided programs (7-day, 28-day, OMAD) to build the habit. • 53 achievements and tier badges to keep you going. WORKS WITH APPLE HEALTH Two-way sync for weight, hydration, steps, sleep and activity, so your fasting data lives alongside the rest of your health. AT A GLANCE — NO NEED TO OPEN THE APP • Home Screen widget — your fasting progress, right on your iPhone home screen. • Lock Screen Live Activity & Dynamic Island — watch the timer tick in real time without unlocking. • Start and end a fast straight from the widget. ON YOUR WRIST • Full Apple Watch app — start, watch and end a fast from your wrist. • Watch-face complication — your fast on your watch face, always visible. PREMIUM Fastory Premium unlocks the Personal AI Coach, AI reviews, pattern insights, unlimited history, advanced charts, custom protocols, guided programs, 16 app icons and data export. Try it free for 7 days, then $6.99/month or $39.99/year. Cancel anytime. Subscriptions auto-renew unless turned off at least 24h before the period ends. Manage or cancel in your App Store account settings. Privacy Policy: https://you-447015.web.app/privacy Terms: https://you-447015.web.app/terms

Screenshots

Polypep4 screens
Fastory4 screens

Verdict

The call

The clearest difference is ads: Fastory at none against Polypep's shown. Fastory also leads on iOS requirement (15.1 vs 17.0). Polypep's advantage is update cadence (every 3 days vs every 9 days). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Polypep sells 4 in-app purchases, starting at $6.99 per month and Fastory sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Polypep ships an update every 3 days, Fastory every 9 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 6 level
Polypep versus Fastory: the parameters behind the verdict, then further details
ParameterPolypepFastory
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 days — betterEvery 9 days
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPod, Apple Watch — better
Requires iOS17.015.1 — better
Further details — not scored
Size71 MB99 MB
Age rating12+17+
DeveloperDal RupnikPhonthip Satthabun

In-app purchases

4 purchases

Polypep

Subscriptions4
  • Pro Monthly3 Days trial$6.991 Month
  • Ultimate Monthly3 Days trial$14.991 Month
  • Pro Yearly7 Days trial$49.991 Year
Show 1 more
  • Ultimate Yearly7 Days trial$99.991 Year
2 purchases

Fastory

Subscriptions2
  • Fastory Premium Monthly$6.991 Month
  • Fastory Premium Annual7 Days trial$39.991 Year

Questions

Is Polypep free?
Polypep is free to download, with in-app purchases available.
Is Fastory free?
Fastory is free to download, with in-app purchases available.
Do Polypep or Fastory have ads?
Polypep shows ads; Fastory does not.
Which is updated more often, Polypep or Fastory?
Polypep ships an update every 3 days, and Fastory every 9 days. Most recently, Polypep was updated on October 28, 2026 and Fastory on October 24, 2026.

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