# 何のマーク？ vs AURA Sync

The clearest difference is in-app purchases: 何のマーク？ at none against AURA Sync's 2. AURA Sync's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AURA Sync sells 2 in-app purchases, starting at $2.99 per month. 何のマーク？ asks for nothing beyond the download.

## The numbers

| Metric | 何のマーク？ | AURA Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 40 months | — |
| Size | 33 MB | 40 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rumi Igarashi](https://appshunter.io/developer/1187114087) | [Haruki Hirai](https://appshunter.io/developer/1896029842) |

## What reviewers say

### 何のマーク？

[App page](https://appshunter.io/ios/app/id1495291491)

**Features:** macOS Compatibility

**In-app purchases:** none


### AURA Sync

[App page](https://appshunter.io/ios/app/aura-sync/id6775190436)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AURA Sync Premium | $2.99 | per month |
| AURA Sync Premium | $24.99 | per year |


## Frequently asked questions

### Is 何のマーク？ free?

何のマーク？ is free to download, with no in-app purchases.

### Is AURA Sync free?

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

### Do 何のマーク？ or AURA Sync have ads?

何のマーク？ shows ads; AURA Sync does not.

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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.*