# Lugn vs SUL（スゥー）

The clearest difference is iOS requirement: SUL（スゥー） at 8.0 against Lugn's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Lugn ships an update every 44 months, SUL（スゥー） every 30 months. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Lugn | SUL（スゥー） |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 44 months | **Every 30 months** |
| Size | 3 MB | 3 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aya Yamaguchi](https://appshunter.io/developer/1560938029) | [shingo kamei](https://appshunter.io/developer/1256845824) |

## What reviewers say

### Lugn

[App page](https://appshunter.io/ios/app/lugn/id1201612107)

**In-app purchases:** none


### SUL（スゥー）

[App page](https://appshunter.io/ios/app/sul/id1448665597)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lugn free?

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

### Is SUL（スゥー） free?

SUL（スゥー） is free to download, with no in-app purchases.

### Do Lugn or SUL（スゥー） have ads?

Neither Lugn nor SUL（スゥー） shows ads.

### Which is updated more often, Lugn or SUL（スゥー）?

Lugn ships an update every 44 months, and SUL（スゥー） every 30 months. Most recently, Lugn was updated on October 14, 2026 and SUL（スゥー） on October 17, 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.*