# Oracle Collection vs Java SE 21 Developer

The clearest difference is update cadence: Java SE 21 Developer at weekly against Oracle Collection's every 3 months. Oracle Collection's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Oracle Collection sells 2 one-off in-app purchases and Java SE 21 Developer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Oracle Collection ships an update every 3 months, Java SE 21 Developer weekly. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Oracle Collection | Java SE 21 Developer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 94 MB | 203 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [uCertify.com](https://appshunter.io/developer/1130631061) | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) |

## What reviewers say

### Oracle Collection

[App page](https://appshunter.io/ios/app/oracle-collection/id1623757481)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Oracle DB Administrator | $49.99 | one-time |
| OCP: Java SE 11 Developer | $49.99 | one-time |


### Java SE 21 Developer

[App page](https://appshunter.io/ios/app/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 Oracle Collection free?

Oracle Collection is free to download, with in-app purchases available.

### Is Java SE 21 Developer free?

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

### Do Oracle Collection or Java SE 21 Developer have ads?

Neither Oracle Collection nor Java SE 21 Developer shows ads.

### Which is updated more often, Oracle Collection or Java SE 21 Developer?

Oracle Collection ships an update every 3 months, and Java SE 21 Developer weekly. Most recently, Oracle Collection was updated on October 27, 2026 and Java SE 21 Developer on October 28, 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.*