# PeptideFox vs Protocol Peptide Tracker App

The clearest difference is monetization model: PeptideFox at free against Protocol Peptide Tracker App's free with in-app purchases. Protocol Peptide Tracker App's advantage is ratings volume (9 vs 3). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. PeptideFox sells 2 in-app purchases, starting at $2.99 per month and Protocol Peptide Tracker App sells 5 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for PeptideFox against 5.0 for Protocol Peptide Tracker App. Both are backed by a comparable volume of ratings — 3 and 9 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | PeptideFox | Protocol Peptide Tracker App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/peptidefox/id6758572242/reviews) | [5.0 (9 ratings)](https://appshunter.io/ios/app/protocol-peptide-tracker-app/id6761315875/reviews) |
| Number of ratings | 3 | **9** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 49 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [HZ29 Inc.](https://appshunter.io/developer/1873736740) | [IMA, LLC](https://appshunter.io/developer/1888827769) |

## What reviewers say

### PeptideFox

[App page](https://appshunter.io/ios/app/peptidefox/id6758572242)

This app simplifies peptide math and tracking for users managing peptide protocols. It calculates precise dosages, logs daily injections, and helps build custom protocols. Manage vial inventory and track multiple peptides simultaneously for optimal results.

**Highlights:** Reconstitution calculator, Daily dose and injection log, Custom protocol management, Vial inventory tracking, Supports various peptide compounds, Private and secure data storage

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Yearly | $19.99 | per year |


### Protocol Peptide Tracker App

[App page](https://appshunter.io/ios/app/protocol-peptide-tracker-app/id6761315875)

This app helps users track and calculate peptide dosages, manage supplements, and monitor habits. It offers AI-powered tools for research, protocol building, and data analysis, all while keeping user data private on the device.

**Highlights:** Peptide calculator and reconstitution math, Comprehensive protocol tracking (compounds, supplements, habits), Six AI-powered tools (research, check-in coach, stack score), Pharmacokinetic curve visualization, 81-compound research library, Injection site rotation with 3D body map, Bloodwork and lab tracking

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protocol Pro - Monthly | $7.99 | per month |
| Protocol Pro - Monthly | $49.99 | per year |
| 50 AI Query Credits | $0.99 | one-time |
| 200 Query Credits | $2.99 | one-time |
| Protocol Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is PeptideFox free?

PeptideFox is free to download, with in-app purchases available.

### Is Protocol Peptide Tracker App free?

Protocol Peptide Tracker App is free to download, with in-app purchases available.

### Which has better reviews, PeptideFox or Protocol Peptide Tracker App?

PeptideFox and Protocol Peptide Tracker App are both rated 5.0 out of 5 on the App Store, from 3 and 9 ratings respectively.

### Do PeptideFox or Protocol Peptide Tracker App have ads?

Neither PeptideFox nor Protocol Peptide Tracker App shows ads.

### Which is updated more often, PeptideFox or Protocol Peptide Tracker App?

PeptideFox ships an update weekly, and Protocol Peptide Tracker App weekly. Most recently, PeptideFox was updated on October 12, 2026 and Protocol Peptide Tracker App on October 16, 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.*