# A vs HARAKU

The clearest difference is in-app purchases: HARAKU at none against A's 1. HARAKU also leads on iOS requirement (15.0 vs 18.0). A's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. A sells 1 one-off in-app purchase. HARAKU asks for nothing beyond the download.

A ships an update every 2 weeks, HARAKU every 10 days. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | A | HARAKU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Size | 271 MB | 24 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ogumo Co., Ltd.](https://appshunter.io/developer/1289277557) | [Fuji Bit Inc.](https://appshunter.io/developer/1874205957) |

## What reviewers say

### A

[App page](https://appshunter.io/ios/app/a-physics-mechanics/id6670272249)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide ads | $5.99 | one-time |


### 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 A free?

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

### Is HARAKU free?

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

### Do A or HARAKU have ads?

HARAKU shows ads; A does not.

### Which is updated more often, A or HARAKU?

A ships an update every 2 weeks, and HARAKU every 10 days. Most recently, A was updated on October 27, 2026 and HARAKU on November 4, 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.*