Comparison

Peptide Tracker vs PepOS

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

Head to head
About

Peptide Tracker

Log peptide injections, manage flexible schedules, and receive timely reminders. This app helps you keep track of your treatment protocols, preparation details, and dose history, ensuring you stay on track with your health regimen. View upcoming and past doses in a calendar and sync data across devices.

Highlights
  • Log peptide injections and other medication types
  • Manage flexible schedules and reminders
  • Save preparation details for peptides
  • Review dose history and upcoming doses
  • Calendar view of doses
  • Widgets and Live Activities for schedule checks
  • iCloud sync across iPhone and iPad
Features
Read full description

Track your peptide routines with a clear dose log, flexible schedules and reminders. PepFlow keeps your protocols and history together so you can see what is next and review what you have recorded. Keep your routine on track - Manage protocols for injections, injectable pens, oral medications, nasal sprays and topical products. - Save preparation details for your peptides for easy reference. - Keep separate schedules and reminders for each protocol. - Record doses and review your history. - See upcoming and recorded doses in the calendar. - Check your schedule with widgets and Live Activities. - Sync your protocols and tracking history across iPhone and iPad with iCloud. - Add scheduled doses to Apple Calendar and Reminders. Consult a healthcare professional before making medical decisions. PepFlow PRO Some features require a PepFlow PRO purchase. Payments are handled through your Apple Account. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the current period ends. Manage subscriptions in your Apple Account settings. Lifetime purchases are a one-time payment and do not renew. Questions or feedback? Contact hi@pepflow.app Terms of Service: https://pepflow.app/terms-of-service/ Privacy Policy: https://pepflow.app/privacy-policy/

About

PepOS

Track peptide doses, build custom protocols, and monitor your body's response with AI insights. Integrates with Apple Health for comprehensive optimization tracking. Not medical advice.

Highlights
  • AI peptide intelligence
  • Protocol builder
  • Apple Health integration
  • Vial inventory tracking
  • Injection site rotation
  • Progress tracking
  • AI insights and reports
Features
Read full description

PepOS is the peptide protocol command center for biohackers who take optimization seriously. PepOS is an educational tracking and journal app. Not medical advice. Always consult a licensed healthcare provider before starting any peptide protocol. Track every dose, vial, and outcome. Build protocols by hand or let AI design them based on your goals. Close your daily rings — Execution, Progress, Recovery — and watch your 7-day optimization score climb. APPLE HEALTH + AI INSIGHTS Connect PepOS to Apple Health to see how your protocols are actually affecting your body. PepOS reads your weight, body composition, resting heart rate, HRV, and sleep data on your device and shows you trends alongside your peptide timeline. Weight entries you log in PepOS sync back to Apple Health automatically. With your separate permission, Peppy — our AI assistant — can also use a 30-day summary of your Health metrics to give protocol-specific insights ("your HRV has improved 14 ms since starting your current protocol") instead of generic advice. AI data sharing is optional, granular, and can be turned off anytime without disconnecting Apple Health. Your health data is never shared with advertisers and never used to train AI models. KEY FEATURES 260+ peptide library with detailed profiles, mechanisms, and educational dosing references Peppy — your AI peptide coach who knows your stack, your goals, and your history Smart protocol builder — manual, titration, on/off cycling, and transition planning Vial inventory tracking with cost-per-dose intelligence Injection site rotation across 8 regions with visual heatmap Daily check-ins for sleep, mood, energy, and side effects Blood work tracking with marker trends over time Progress photos with AI body composition analysis Weekly intelligence reports synthesized by AI Calendar sync, dose reminders, and protocol scheduling SUBSCRIPTION TIERS Free — 3 protocols, basic AI chat, 2 vials PepOS Intelligence ($9.99/mo or $59.99/yr, save 50%) — Unlimited protocols, unlimited AI, blood work tracking, AI blood analyzer, AI vial scanner, progress photo analysis, voice input, calendar sync, protocol sharing, transition planner, weekly intelligence reports, and priority AI Built by biohackers, for biohackers who don't settle for spreadsheets. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://app.pepos.app/privacy

Screenshots

Peptide Tracker4 screens
PepOS4 screens

Verdict

The call

The clearest difference is ratings volume: Peptide Tracker at 442 against PepOS's 1. PepOS's advantage is review sentiment (100% vs 77%) and rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases 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. Peptide Tracker sells 11 in-app purchases, starting at $0.99 per 7 days and PepOS sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PepOS holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Peptide Tracker has 442 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 77% of Peptide Tracker's written reviews are positive against 100% of PepOS's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Peptide Tracker versus PepOS: the parameters behind the verdict, then further details
ParameterPeptide TrackerPepOS
PriceFreeFree
Rating4.8 (442 ratings)5.0 (1 ratings) — better
Positive reviews77.4% of reviews100.0% of reviews — better
Number of ratings442 — better1
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size181 MB29 MB
Age rating4+17+
Developerkeinois OUDOHO DIGITAL, LLC

Customer experience

Peptide Tracker

All ratings442 ratings
Positive95.2%
Neutral1.4%
Negative3.4%
Written reviews31 reviews
Positive77.4%
Neutral6.5%
Negative16.1%

PepOS

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

11 purchases

Peptide Tracker

Subscriptions11
  • PepFlow PRO (Weekly)3 Days trial$0.997 Days
  • PepFlow PRO (Monthly)3 Days trial$2.991 Month
  • PepFlow PRO (Weekly)3 Days trial$2.997 Days
Show 8 more
  • Peptide PRO (Weekly)3 Days trial2 variants$2.997 Days
  • PepFlow PRO (Weekly)3 Days trial3 variants$3.997 Days
  • PepFlow PRO (Annual)3 Days trial$8.991 Year
  • PepFlow PRO (Monthly)3 Days trial2 variants$9.991 Month
  • Peptide PRO (Annual)3 Days trial$14.991 Year
  • Peptide PRO (Annual)3 Days trial$19.991 Year
  • PepFlow PRO (Annual)3 Days trial2 variants$29.991 Year
  • Peptide PRO (Annual)3 Days trial$44.991 Year
2 purchases

PepOS

Subscriptions2
  • PepOS Intelligence14 Days trial$9.991 Month
  • PepOS Intelligence14 Days trial$59.991 Year

Questions

Is Peptide Tracker free?
Peptide Tracker is free to download, with in-app purchases available.
Is PepOS free?
PepOS is free to download, with in-app purchases available.
Which has better reviews, Peptide Tracker or PepOS?
PepOS is rated higher. Peptide Tracker averages 4.8 out of 5 from 442 ratings, while PepOS averages 5.0 from 1 ratings.
Do Peptide Tracker or PepOS have ads?
Neither Peptide Tracker nor PepOS shows ads.
Which is updated more often, Peptide Tracker or PepOS?
Peptide Tracker ships an update fortnightly, and PepOS fortnightly. Most recently, Peptide Tracker was updated on October 30, 2026 and PepOS on October 31, 2026.

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