# Bio Log vs PepTrack

Bio Log 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 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 November 10, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Bio Log | PepTrack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bio-log-peptide-tracker/id6773158529/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 2 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [alexander rieger](https://appshunter.io/developer/1839352038) | [星燃 余](https://appshunter.io/developer/1821083399) |

## What reviewers say

### 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 features for logging entries, managing injection sites, and reviewing historical data. Optional AI assistance can help organize notes and generate summaries.

**Highlights:** Dose and vial tracking, Injection site mapping, Journaling with notes, History search and filtering, Vial inventory management, AI-powered summaries, Data export

**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 free?

Bio Log 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 or PepTrack have ads?

Neither Bio Log nor PepTrack shows ads.

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

Bio Log ships an update every 2 weeks, and PepTrack every 2 weeks. Most recently, Bio Log was updated on November 10, 2026 and PepTrack on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*