# プロジェクトマネージャ試験対策 vs Oracle Java SE 21 Developer

The clearest difference is price: Oracle Java SE 21 Developer at Free against プロジェクトマネージャ試験対策's $3.99. Oracle Java SE 21 Developer also leads on update cadence (every 4 days vs every 6 months). プロジェクトマネージャ試験対策's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.1). On ads and device support there is nothing between them.

Oracle Java SE 21 Developer is free to download; プロジェクトマネージャ試験対策 costs $3.99 up front. Oracle Java SE 21 Developer sells 1 one-off in-app purchase. プロジェクトマネージャ試験対策 asks for nothing beyond the download.

プロジェクトマネージャ試験対策 ships an update every 6 months, Oracle Java SE 21 Developer every 4 days. The most recent releases landed on September 5, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | プロジェクトマネージャ試験対策 | Oracle Java SE 21 Developer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Size | 51 MB | 201 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masahiro Tomosada](https://appshunter.io/developer/1587710118) | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) |

## What reviewers say

### プロジェクトマネージャ試験対策

[App page](https://appshunter.io/ios/app/id1591049581)

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

**In-app purchases:** none


### Oracle Java SE 21 Developer

[App page](https://appshunter.io/ios/app/oracle-java-se-21-developer/id6785110070)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is プロジェクトマネージャ試験対策 free?

プロジェクトマネージャ試験対策 costs $3.99, with no in-app purchases.

### Is Oracle Java SE 21 Developer free?

Oracle Java SE 21 Developer is free to download, with in-app purchases available.

### Do プロジェクトマネージャ試験対策 or Oracle Java SE 21 Developer have ads?

Neither プロジェクトマネージャ試験対策 nor Oracle Java SE 21 Developer shows ads.

### Which is updated more often, プロジェクトマネージャ試験対策 or Oracle Java SE 21 Developer?

プロジェクトマネージャ試験対策 ships an update every 6 months, and Oracle Java SE 21 Developer every 4 days. Most recently, プロジェクトマネージャ試験対策 was updated on September 5, 2026 and Oracle Java SE 21 Developer on September 7, 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.*