# PhysKey Custom vs HARAKU

The clearest difference is ads: PhysKey Custom at none against HARAKU's shown. HARAKU's advantage is update cadence (every 10 days vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

PhysKey Custom ships an update every 4 months, HARAKU every 10 days. The most recent releases landed on October 31, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | PhysKey Custom | HARAKU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 10 days** |
| Size | 5 MB | 24 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ryosuke Asano](https://appshunter.io/developer/1858758761) | [Fuji Bit Inc.](https://appshunter.io/developer/1874205957) |

## What reviewers say

### PhysKey Custom

[App page](https://appshunter.io/ios/app/physkey-custom/id6757507136)

**In-app purchases:** none


### HARAKU

[App page](https://appshunter.io/ios/app/haraku-wave-physics/id6759958253)

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

**In-app purchases:** none


## Frequently asked questions

### Is PhysKey Custom free?

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

### Is HARAKU free?

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

### Do PhysKey Custom or HARAKU have ads?

HARAKU shows ads; PhysKey Custom does not.

### Which is updated more often, PhysKey Custom or HARAKU?

PhysKey Custom ships an update every 4 months, and HARAKU every 10 days. Most recently, PhysKey Custom was updated on October 31, 2026 and HARAKU on November 9, 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.*