# Bio Log Peptide Journal vs PepTrack

Bio Log Peptide Journal and PepTrack are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Bio Log Peptide Journal sells 1 in-app purchase, starting at $3.99 per month and PepTrack sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Bio Log Peptide Journal | PepTrack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bio-log-peptide-journal/id6773158529/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Subscription | — |
| Size | 4 MB | 2 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 17+ |
| Developer | [alexander rieger](https://appshunter.io/developer/1839352038) | [星燃 余](https://appshunter.io/developer/1821083399) |

## What reviewers say

### Bio Log Peptide Journal

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

This app provides a private journal for tracking peptides, compounds, and related health data. It helps organize schedules, vial notes, labs, and progress with AI-powered insights. It is for personal tracking and informational purposes only.

**Highlights:** Peptide and compound tracking, Dose logs and history, Schedule reminders, Vial and inventory notes, Side effect tracking, Lab and biomarker logging, Progress photos and notes, AI summaries and insights

**In-app purchases (1)**

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


### PepTrack

[App page](https://appshunter.io/ios/app/peptrack-peptide-log/id6789529062)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide Log Pro (Weekly) | $2.99 | per 7 days |
| Peptide Log Pro (Monthly) | $7.99 | per month |
| Peptide Log Pro (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is Bio Log Peptide Journal free?

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

### Is PepTrack free?

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

### Do Bio Log Peptide Journal or PepTrack have ads?

Neither Bio Log Peptide Journal nor PepTrack shows ads.

### Which is updated more often, Bio Log Peptide Journal or PepTrack?

Bio Log Peptide Journal ships an update every 2 weeks, and PepTrack every 2 weeks. Most recently, Bio Log Peptide Journal was updated on October 2, 2026 and PepTrack on October 8, 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.*