# Japanese Counters Master vs 危険物乙4Pass

The clearest difference is in-app purchases: Japanese Counters Master at none against 危険物乙4Pass's 1. Japanese Counters Master also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 危険物乙4Pass sells 1 one-off in-app purchase. Japanese Counters Master asks for nothing beyond the download.

Japanese Counters Master ships an update fortnightly, 危険物乙4Pass weekly. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Japanese Counters Master | 危険物乙4Pass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Size | 40 MB | 43 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hatsuhito Shimizu](https://appshunter.io/developer/1809291940) | [KANDK](https://appshunter.io/developer/1867080143) |

## What reviewers say

### Japanese Counters Master

[App page](https://appshunter.io/ios/app/japanese-counters-master/id6744892637)

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

**In-app purchases:** none


### 危険物乙4Pass

[App page](https://appshunter.io/ios/app/4pass-4/id6768249746)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $1.99 | one-time |


## Frequently asked questions

### Is Japanese Counters Master free?

Japanese Counters Master is free to download, with no in-app purchases.

### Is 危険物乙4Pass free?

危険物乙4Pass is free to download, with in-app purchases available.

### Do Japanese Counters Master or 危険物乙4Pass have ads?

危険物乙4Pass shows ads; Japanese Counters Master does not.

### Which is updated more often, Japanese Counters Master or 危険物乙4Pass?

Japanese Counters Master ships an update fortnightly, and 危険物乙4Pass weekly. Most recently, Japanese Counters Master was updated on October 16, 2026 and 危険物乙4Pass on October 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.*