# Inkstroop vs ストループ１分チャレンジ

The clearest difference is iOS requirement: ストループ１分チャレンジ at 15.0 against Inkstroop's 17.0. 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.

Inkstroop ships an update every 3 days, ストループ１分チャレンジ every 4 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Inkstroop | ストループ１分チャレンジ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 4 days |
| Size | 5 MB | 80 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BIN WANG](https://appshunter.io/developer/1881032464) | [taro nakamura](https://appshunter.io/developer/1584307392) |

## What reviewers say

### Inkstroop

[App page](https://appshunter.io/ios/app/inkstroop/id6771827113)

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

**In-app purchases:** none


### ストループ１分チャレンジ

[App page](https://appshunter.io/ios/app/id6787798426)

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

**In-app purchases:** none


## Frequently asked questions

### Is Inkstroop free?

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

### Is ストループ１分チャレンジ free?

ストループ１分チャレンジ is free to download, with no in-app purchases.

### Do Inkstroop or ストループ１分チャレンジ have ads?

Both Inkstroop and ストループ１分チャレンジ show ads.

### Which is updated more often, Inkstroop or ストループ１分チャレンジ?

Inkstroop ships an update every 3 days, and ストループ１分チャレンジ every 4 days. Most recently, Inkstroop was updated on October 10, 2026 and ストループ１分チャレンジ on October 13, 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.*