# Protocol vs Peptide Tracker

The clearest difference is rating: Peptide Tracker at 4.0 against Protocol's 3.0. Peptide Tracker also leads on in-app purchases (none vs 2) and ads (none vs shown). Protocol's advantage is update cadence (fortnightly vs every 2 months) and iOS requirement (16.0 vs 18.0). On price, review sentiment and device support there is nothing between them.

Both are free to download. Protocol sells 2 in-app purchases, starting at $14.99 per month. Peptide Tracker asks for nothing beyond the download.

Peptide Tracker holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Protocol ships an update fortnightly, Peptide Tracker every 2 months. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Protocol | Peptide Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/protocol-hrv-tracker/id6762954264/reviews) | **[4.0 (6 ratings)](https://appshunter.io/ios/app/peptide-tracker-pepty/id6775632270/reviews)** |
| Number of ratings | 2 | **6** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 58 MB | 14 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [AppEcho Labs ,LLC](https://appshunter.io/developer/1701185869) | [Unsal Oner](https://appshunter.io/developer/1696591653) |

## What reviewers say

### Protocol

[App page](https://appshunter.io/ios/app/protocol-hrv-tracker/id6762954264)

This app helps you scientifically test health claims about supplements, routines, and lifestyle changes. It guides you through 21-day experiments using your own body data and provides clear verdicts based on your metrics.

**Highlights:** Test health claims scientifically, Structured 21-day experiments, Integrates with Apple Health data, Provides clear 'Keep It' or 'Drop It' verdicts, Tests supplements, routines, and lifestyle changes, Data privacy and export options

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protocol Pro (Monthly) | $14.99 | per month |
| Protocol Pro (Annual) | $119.99 | per year |


### Peptide Tracker

[App page](https://appshunter.io/ios/app/peptide-tracker-pepty/id6775632270)

Manage peptide protocols, doses, inventory, and injection sites with this free, ad-free application. It offers smart calculators for reconstitution and blend calculations, along with customizable reminders to keep you on schedule. Track your progress and export your data easily.

**Highlights:** Customizable peptide protocols, Dose logging and inventory management, Injection site tracking, Reconstitution and blend calculators, Dose history calendar, Optional reminders, Data export and account deletion

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

**In-app purchases:** none


## Frequently asked questions

### Is Protocol free?

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

### Is Peptide Tracker free?

Peptide Tracker is free to download, with no in-app purchases.

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

Peptide Tracker is rated higher. Protocol averages 3.0 out of 5 from 2 ratings, while Peptide Tracker averages 4.0 from 6 ratings.

### Do Protocol or Peptide Tracker have ads?

Protocol shows ads; Peptide Tracker does not.

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

Protocol ships an update fortnightly, and Peptide Tracker every 2 months. Most recently, Protocol was updated on September 30, 2026 and Peptide Tracker on September 28, 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.*