# tsubomaster vs ブルーライトチェッカー：ブルーライトを可視化

The clearest difference is in-app purchases: tsubomaster at none against ブルーライトチェッカー：ブルーライトを可視化's 1. ブルーライトチェッカー：ブルーライトを可視化's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. ブルーライトチェッカー：ブルーライトを可視化 sells 1 in-app purchase, starting at $1.99 per year. tsubomaster asks for nothing beyond the download.

tsubomaster ships an update every 6 months, ブルーライトチェッカー：ブルーライトを可視化 every 3 months. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | tsubomaster | ブルーライトチェッカー：ブルーライトを可視化 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 9 MB | 52 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JK-SCIENCE CO., LTD.](https://appshunter.io/developer/493464594) | [404 Ltd.](https://appshunter.io/developer/1579452766) |

## What reviewers say

### tsubomaster

[App page](https://appshunter.io/ios/app/tsubomaster/id493464591)

**Features:** macOS Compatibility

**In-app purchases:** none


### ブルーライトチェッカー：ブルーライトを可視化

[App page](https://appshunter.io/ios/app/id1579452764)

**Features:** macOS Compatibility, Safari Extension

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ブルーライトカットExtension(12ヶ月) | $1.99 | per year |


## Frequently asked questions

### Is tsubomaster free?

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

### Is ブルーライトチェッカー：ブルーライトを可視化 free?

ブルーライトチェッカー：ブルーライトを可視化 is free to download, with in-app purchases available.

### Do tsubomaster or ブルーライトチェッカー：ブルーライトを可視化 have ads?

tsubomaster shows ads; ブルーライトチェッカー：ブルーライトを可視化 does not.

### Which is updated more often, tsubomaster or ブルーライトチェッカー：ブルーライトを可視化?

tsubomaster ships an update every 6 months, and ブルーライトチェッカー：ブルーライトを可視化 every 3 months. Most recently, tsubomaster was updated on September 8, 2026 and ブルーライトチェッカー：ブルーライトを可視化 on September 10, 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.*