# KidTrauma vs Hidden Hum

The clearest difference is update cadence: Hidden Hum at every 3 weeks against KidTrauma's every 12 months. KidTrauma's advantage is iOS requirement (12.2 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KidTrauma ships an update every 12 months, Hidden Hum every 3 weeks. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | KidTrauma | Hidden Hum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Size | 126 MB | 97 MB |
| Requires iOS | **12.2** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Markus Landolt](https://appshunter.io/developer/935338145) | [Divamo Well Being Private Limited](https://appshunter.io/developer/1806374668) |

## What reviewers say

### KidTrauma

[App page](https://appshunter.io/ios/app/kidtrauma/id935338146)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hidden Hum

[App page](https://appshunter.io/ios/app/hidden-hum/id6744175628)

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

**In-app purchases:** none


## Frequently asked questions

### Is KidTrauma free?

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

### Is Hidden Hum free?

Hidden Hum is free to download, with no in-app purchases.

### Do KidTrauma or Hidden Hum have ads?

Neither KidTrauma nor Hidden Hum shows ads.

### Which is updated more often, KidTrauma or Hidden Hum?

KidTrauma ships an update every 12 months, and Hidden Hum every 3 weeks. Most recently, KidTrauma was updated on November 6, 2026 and Hidden Hum on November 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.*