# Flex Log vs Human OS

The clearest difference is in-app purchases: Flex Log at none against Human OS's 1. Flex Log also leads on iOS requirement (12.4 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Human OS sells 1 one-off in-app purchase. Flex Log asks for nothing beyond the download.

## The numbers

| Metric | Flex Log | Human OS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 18 MB | 2 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Aaron Larner](https://appshunter.io/developer/950120608) | [WIKTOR BORYS TENDERA](https://appshunter.io/developer/1855562027) |

## What reviewers say

### Flex Log

[App page](https://appshunter.io/ios/app/flex-log/id6476252928)

**Features:** macOS Compatibility

**In-app purchases:** none


### Human OS

[App page](https://appshunter.io/ios/app/human-os-body-dashboard/id6758944721)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Custom indicators | $3.99 | one-time |


## Frequently asked questions

### Is Flex Log free?

Flex Log is free to download, with no in-app purchases.

### Is Human OS free?

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

### Do Flex Log or Human OS have ads?

Neither Flex Log nor Human OS shows ads.

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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.*