# Unit 27 vs Biohack

The clearest difference is in-app purchases: Unit 27 at none against Biohack's 3. Unit 27 also leads on iOS requirement (13.5 vs 16.4). Biohack's advantage is update cadence (every 2 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Biohack sells 3 in-app purchases, starting at $4.99 per month. Unit 27 asks for nothing beyond the download.

Unit 27 ships an update every 4 months, Biohack every 2 days. The most recent releases landed on November 8, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Unit 27 | Biohack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 14 MB | 61 MB |
| Requires iOS | **13.5** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [UNIT - 27 COMPANY LIMITED](https://appshunter.io/developer/1743206310) | [BROLY GROUP PTY LTD](https://appshunter.io/developer/6815562099) |

## What reviewers say

### Unit 27

[App page](https://appshunter.io/ios/app/unit-27/id6499341039)

**Features:** macOS Compatibility

**In-app purchases:** none


### Biohack

[App page](https://appshunter.io/ios/app/biohack-peptide-tracker/id6815562097)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $49.99 | per year |
| Lifetime unlock | $2.99 | one-time |


## Frequently asked questions

### Is Unit 27 free?

Unit 27 is free to download, with no in-app purchases.

### Is Biohack free?

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

### Do Unit 27 or Biohack have ads?

Neither Unit 27 nor Biohack shows ads.

### Which is updated more often, Unit 27 or Biohack?

Unit 27 ships an update every 4 months, and Biohack every 2 days. Most recently, Unit 27 was updated on November 8, 2026 and Biohack on November 13, 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.*