# Peptide Log vs Peptide Library and Tracker

The clearest difference is rating: Peptide Library and Tracker at 4.7 against Peptide Log's 4.0. Peptide Library and Tracker also leads on monetization model (free vs subscription) and review sentiment (86% vs 75%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Peptide Log sells 2 in-app purchases, starting at $8.99 per month and Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Peptide Library and Tracker holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 37 and 25 respectively. Written reviews point the same way: 75% of Peptide Log's written reviews are positive against 86% of Peptide Library and Tracker's.

Peptide Log ships an update every 8 days, Peptide Library and Tracker every 10 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Peptide Log | Peptide Library and Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (37 ratings)](https://appshunter.io/ios/app/peptide-log/id6744315346/reviews) | **[4.7 (25 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews)** |
| Number of ratings | **37** | 25 |
| Positive reviews | 75.0% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 10 days |
| Monetization | Subscription | **Free** |
| Size | 60 MB | 78 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Johannes von Grundherr](https://appshunter.io/developer/1806943173) | [Superfime LLC](https://appshunter.io/developer/1833586524) |

## 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 |


### Peptide Library and Tracker

[App page](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737)

This app serves as a comprehensive guide and lab assistant for peptide research. It offers a detailed peptide library, dose calculation tools, and advanced tracking features for logging, inventory management, and protocol adherence. Users can also access educational content and community Q&A to enhance their research workflow.

**Highlights:** Comprehensive Peptide Library & Database, Advanced Peptide Dose Calculator, Smart Tracking & Calendar View, Lab Inventory Management, Protocol Tracking & Lab Assistant, Integrated Peptide Education

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide Library Pro Monthly | $4.99 | per month |
| Peptide Library Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Peptide Log free?

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

### Is Peptide Library and Tracker free?

Peptide Library and Tracker is free to download, with in-app purchases available.

### Which has better reviews, Peptide Log or Peptide Library and Tracker?

Peptide Library and Tracker is rated higher. Peptide Log averages 4.0 out of 5 from 37 ratings, while Peptide Library and Tracker averages 4.7 from 25 ratings.

### Do Peptide Log or Peptide Library and Tracker have ads?

Neither Peptide Log nor Peptide Library and Tracker shows ads.

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

Peptide Log ships an update every 8 days, and Peptide Library and Tracker every 10 days. Most recently, Peptide Log was updated on October 22, 2026 and Peptide Library and Tracker on October 24, 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.*