# Re vs Java SE 21 Developer

The clearest difference is ads: Java SE 21 Developer at none against Re's shown. Java SE 21 Developer also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Re 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.

Re ships an update every 5 days, Java SE 21 Developer weekly. The most recent releases landed on October 30, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Re | Java SE 21 Developer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Weekly |
| Size | 18 MB | 233 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mendoxa LLC](https://appshunter.io/developer/1816388997) | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) |

## What reviewers say

### Re

[App page](https://appshunter.io/ios/app/repra-nw/id6749206119)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mendoくんパワーアップ（開発支援） | $0.49 | one-time |
| 広告非表示 | $0.99 | 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 Re free?

Re 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 Re or Java SE 21 Developer have ads?

Re shows ads; Java SE 21 Developer does not.

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

Re ships an update every 5 days, and Java SE 21 Developer weekly. Most recently, Re was updated on October 30, 2026 and Java SE 21 Developer on November 13, 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.*