# 暗算Blitz vs 慣用色名 ２級

The clearest difference is price: 暗算Blitz at Free against 慣用色名 ２級's $1.99. 暗算Blitz also leads on update cadence (daily vs every 3 weeks). 慣用色名 ２級's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

暗算Blitz is free to download; 慣用色名 ２級 costs $1.99 up front. 暗算Blitz sells 1 one-off in-app purchase. 慣用色名 ２級 asks for nothing beyond the download.

暗算Blitz ships an update daily, 慣用色名 ２級 every 3 weeks. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 暗算Blitz | 慣用色名 ２級 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 3 weeks |
| Monetization | — | Paid |
| Size | 54 MB | 1 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Toshihide KAWAI](https://appshunter.io/developer/1598098272) | [Akihiro Sekine](https://appshunter.io/developer/1810496539) |

## What reviewers say

### 暗算Blitz

[App page](https://appshunter.io/ios/app/blitz/id6741730652)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム・ユーザー | $14.99 | one-time |


### 慣用色名 ２級

[App page](https://appshunter.io/ios/app/id6746458592)

This app helps users memorize common color names for the Color Aptitude Test (検定) Level 2. It offers training modes where you can answer color names from given colors or identify colors from names, with customizable difficulty and order. It also provides lists of common color names and PCCS color systems.

**Highlights:** Memorize common color names, Color recognition training, Customizable difficulty, Customizable question order, Common color name list, PCCS color list

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

**In-app purchases:** none


## Frequently asked questions

### Is 暗算Blitz free?

暗算Blitz is free to download, with in-app purchases available.

### Is 慣用色名 ２級 free?

慣用色名 ２級 costs $1.99, with no in-app purchases.

### Do 暗算Blitz or 慣用色名 ２級 have ads?

暗算Blitz shows ads; 慣用色名 ２級 does not.

### Which is updated more often, 暗算Blitz or 慣用色名 ２級?

暗算Blitz ships an update daily, and 慣用色名 ２級 every 3 weeks. Most recently, 暗算Blitz was updated on October 3, 2026 and 慣用色名 ２級 on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*