# Peptide Log vs Protocol Tracker

The clearest difference is iOS requirement: Peptide Log at 18.6 against Protocol Tracker's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Peptide Log sells 2 in-app purchases, starting at $8.99 per month and Protocol Tracker sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Peptide Log ships an update every 8 days, Protocol Tracker every 2 weeks. The most recent releases landed on August 1, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Peptide Log | Protocol Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (35 ratings)](https://appshunter.io/ios/app/peptide-log/id6744315346/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Subscription | — |
| Size | 60 MB | 20 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Johannes von Grundherr](https://appshunter.io/developer/1806943173) | [Mc Pol Cruz](https://appshunter.io/developer/1884728788) |

## What reviewers say

### Peptide Log

[App page](https://appshunter.io/ios/app/peptide-log/id6744315346)

Manage your peptide treatment plan with this app. Track injections, monitor progress, manage inventory, and visualize your treatment with advanced features. It offers a free trial before requiring a subscription.

**Highlights:** Multi-phase protocol tracking, Custom peptide blend creation, Full inventory management, Consumables tracking with alerts, Pharmacokinetic concentration curves, Injection site rotation, Progress photo tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide Log Monthly | $8.99 | per month |
| Peptide Log Yearly | $39.99 | per year |


### Protocol Tracker

[App page](https://appshunter.io/ios/app/protocol-tracker-dosefi/id6760504673)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $34.99 | per year |


## Frequently asked questions

### Is Peptide Log free?

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

### Is Protocol Tracker free?

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

### Do Peptide Log or Protocol Tracker have ads?

Neither Peptide Log nor Protocol Tracker shows ads.

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

Peptide Log ships an update every 8 days, and Protocol Tracker every 2 weeks. Most recently, Peptide Log was updated on August 1, 2026 and Protocol Tracker on September 14, 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.*