# ATU vs Bliss（公式）

The clearest difference is update cadence: Bliss（公式） at fortnightly against ATU's every 37 months. Bliss（公式） also leads on iOS requirement (8.0 vs 13.0). 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.

ATU ships an update every 37 months, Bliss（公式） fortnightly. The most recent releases landed on September 6, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | ATU | Bliss（公式） |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Fortnightly** |
| Size | 3 MB | 4 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [shingo kamei](https://appshunter.io/developer/1256845824) | [Chieko Ito](https://appshunter.io/developer/1436831082) |

## What reviewers say

### ATU

[App page](https://appshunter.io/ios/app/atu/id1253349167)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bliss（公式）

[App page](https://appshunter.io/ios/app/bliss/id1473571155)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ATU free?

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

### Is Bliss（公式） free?

Bliss（公式） is free to download, with no in-app purchases.

### Do ATU or Bliss（公式） have ads?

Neither ATU nor Bliss（公式） shows ads.

### Which is updated more often, ATU or Bliss（公式）?

ATU ships an update every 37 months, and Bliss（公式） fortnightly. Most recently, ATU was updated on September 6, 2026 and Bliss（公式） on September 7, 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.*