# Peptide Tracker vs PepOS

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.

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.

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.

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

## The numbers

| Metric | Peptide Tracker | PepOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (442 ratings)](https://appshunter.io/ios/app/peptide-tracker-pepflow/id6740525224/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pepos-peptide-tracker/id6763047593/reviews)** |
| Number of ratings | **442** | 1 |
| Positive reviews | 77.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Freemium | Freemium |
| Size | 181 MB | 29 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [keinois OU](https://appshunter.io/developer/1597616328) | [DOHO DIGITAL, LLC](https://appshunter.io/developer/1895136742) |

## What reviewers say

### Peptide Tracker

[App page](https://appshunter.io/ios/app/peptide-tracker-pepflow/id6740525224)

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:** Family Sharing

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PepFlow PRO (Weekly) | $0.99 | per 7 days |
| PepFlow PRO (Monthly) | $2.99 | per month |
| PepFlow PRO (Weekly) | $2.99 | per 7 days |
| Peptide PRO (Weekly) | $2.99 | per 7 days |
| PepFlow PRO (Weekly) | $3.99 | per 7 days |
| PepFlow PRO (Annual) | $8.99 | per year |
| PepFlow PRO (Monthly) | $9.99 | per month |
| Peptide PRO (Annual) | $14.99 | per year |
| Peptide PRO (Annual) | $19.99 | per year |
| PepFlow PRO (Annual) | $29.99 | per year |
| Peptide PRO (Annual) | $44.99 | per year |


### PepOS

[App page](https://appshunter.io/ios/app/pepos-peptide-tracker/id6763047593)

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:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PepOS Intelligence | $9.99 | per month |
| PepOS Intelligence | $59.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*