# Prof. Peptide Protocol Tracker vs Keel

The clearest difference is iOS requirement: Keel at 13.0 against Prof. Peptide Protocol Tracker's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Prof. Peptide Protocol Tracker ships an update every 3 weeks, Keel every 2 weeks. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Prof. Peptide Protocol Tracker | Keel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/prof-peptide-protocol-tracker/id6761995269/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 33 MB | 22 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Strength Cycle Studios, LLC](https://appshunter.io/developer/1892356312) | [SKINSCAN AI LTD](https://appshunter.io/developer/6794461336) |

## What reviewers say

### Prof. Peptide Protocol Tracker

[App page](https://appshunter.io/ios/app/prof-peptide-protocol-tracker/id6761995269)

Track peptide and GLP-1 doses, calculate reconstitutions, and manage complex protocols. Access a compound library, visualize estimated levels, and review research summaries. Your data remains private and on your device.

**Highlights:** Dose logging and reminders, Reconstitution calculator, 60+ compound library, Full protocol and stack support, Estimated compound levels visualization, AI research assistant, Results and trends tracking

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

**In-app purchases:** none


### Keel

[App page](https://appshunter.io/ios/app/keel-glp-1-injection-tracker/id6794461334)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prof. Peptide Protocol Tracker free?

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

### Is Keel free?

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

### Do Prof. Peptide Protocol Tracker or Keel have ads?

Neither Prof. Peptide Protocol Tracker nor Keel shows ads.

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

Prof. Peptide Protocol Tracker ships an update every 3 weeks, and Keel every 2 weeks. Most recently, Prof. Peptide Protocol Tracker was updated on October 2, 2026 and Keel on October 4, 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.*