# Peptide Library and Tracker vs Bio Log

The clearest difference is monetization model: Peptide Library and Tracker at free against Bio Log's freemium. Peptide Library and Tracker also leads on ratings volume (26 vs 2) and update cadence (every 10 days vs every 3 weeks). Bio Log's advantage is rating (5.0 vs 4.7). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 per month and Bio Log sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Bio Log holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Peptide Library and Tracker has 26 ratings behind it against 2, so its average is the more settled of the two.

Peptide Library and Tracker ships an update every 10 days, Bio Log every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Peptide Library and Tracker | Bio Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (26 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bio-log-peptide-tracker/id6773158529/reviews)** |
| Number of ratings | **26** | 2 |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Size | 78 MB | 5 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Superfime LLC](https://appshunter.io/developer/1833586524) | [alexander rieger](https://appshunter.io/developer/1839352038) |

## What reviewers say

### 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 |


### Bio Log

[App page](https://appshunter.io/ios/app/bio-log-peptide-tracker/id6773158529)

This app helps you meticulously track peptide doses, vial details, and personal notes in a centralized journal. It offers daily views, logging capabilities, and history search, with optional AI assistance for summaries and organization. Records are stored locally for your control.

**Highlights:** Schedule and dose tracking, Vial inventory management, Injection site mapping, Journal search and filtering, AI-powered note organization, Local data storage, Data export

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bio Log Membership | $3.99 | per month |


## Frequently asked questions

### Is Peptide Library and Tracker free?

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

### Is Bio Log free?

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

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

Bio Log is rated higher. Peptide Library and Tracker averages 4.7 out of 5 from 26 ratings, while Bio Log averages 5.0 from 2 ratings.

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

Neither Peptide Library and Tracker nor Bio Log shows ads.

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

Peptide Library and Tracker ships an update every 10 days, and Bio Log every 3 weeks. Most recently, Peptide Library and Tracker was updated on October 30, 2026 and Bio Log on October 31, 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.*