# RIU vs Asulen

The clearest difference is update cadence: Asulen at fortnightly against RIU's every 8 months. RIU's advantage is iOS requirement (12.0 vs 16.4). 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.

RIU ships an update every 8 months, Asulen fortnightly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RIU | Asulen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Fortnightly** |
| Size | 38 MB | 55 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Tuvshintugs Tsoodol](https://appshunter.io/developer/1737345585) | [Temuulen Purevsuren](https://appshunter.io/developer/6813041038) |

## What reviewers say

### RIU

[App page](https://appshunter.io/ios/app/riu/id6479890958)

**In-app purchases:** none


### Asulen

[App page](https://appshunter.io/ios/app/asulen/id6813041036)

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

**In-app purchases:** none


## Frequently asked questions

### Is RIU free?

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

### Is Asulen free?

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

### Do RIU or Asulen have ads?

Neither RIU nor Asulen shows ads.

### Which is updated more often, RIU or Asulen?

RIU ships an update every 8 months, and Asulen fortnightly. Most recently, RIU was updated on November 4, 2026 and Asulen on October 31, 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.*