# Oracle Java SE 21 Developer vs Astral Parents

The clearest difference is in-app purchases: Astral Parents at none against Oracle Java SE 21 Developer's 1. Oracle Java SE 21 Developer's advantage is update cadence (weekly vs every 3 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Oracle Java SE 21 Developer sells 1 one-off in-app purchase. Astral Parents asks for nothing beyond the download.

Oracle Java SE 21 Developer ships an update weekly, Astral Parents every 3 weeks. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Oracle Java SE 21 Developer | Astral Parents |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 209 MB | 62 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) | [Schoolhouse Learning Inc.](https://appshunter.io/developer/1828174240) |

## What reviewers say

### 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 |


### Astral Parents

[App page](https://appshunter.io/ios/app/astral-parents/id6797631083)

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

**In-app purchases:** none


## Frequently asked questions

### Is Oracle Java SE 21 Developer free?

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

### Is Astral Parents free?

Astral Parents is free to download, with no in-app purchases.

### Do Oracle Java SE 21 Developer or Astral Parents have ads?

Neither Oracle Java SE 21 Developer nor Astral Parents shows ads.

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

Oracle Java SE 21 Developer ships an update weekly, and Astral Parents every 3 weeks. Most recently, Oracle Java SE 21 Developer was updated on October 9, 2026 and Astral Parents on October 11, 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.*