# PIECE vs こおりがとけるまで 勉強タイマー

The clearest difference is ads: PIECE at none against こおりがとけるまで 勉強タイマー's shown. こおりがとけるまで 勉強タイマー's advantage is iOS requirement (15.0 vs 17.0). On price, 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.

## The numbers

| Metric | PIECE | こおりがとけるまで 勉強タイマー |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | — |
| Size | 12 MB | 8 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shuntaro Shimada](https://appshunter.io/developer/1851679432) | [RAITO SASAGAWA](https://appshunter.io/developer/6780805981) |

## What reviewers say

### PIECE

[App page](https://appshunter.io/ios/app/piece/id6796343521)

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

**In-app purchases:** none


### こおりがとけるまで 勉強タイマー

[App page](https://appshunter.io/ios/app/id6798429736)

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

**In-app purchases:** none


## Frequently asked questions

### Is PIECE free?

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

### Is こおりがとけるまで 勉強タイマー free?

こおりがとけるまで 勉強タイマー is free to download, with no in-app purchases.

### Do PIECE or こおりがとけるまで 勉強タイマー have ads?

こおりがとけるまで 勉強タイマー shows ads; PIECE 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.*