# 떠먹 vs Oracle Java SE 21 Developer

The clearest difference is in-app purchases: 떠먹 at none against Oracle Java SE 21 Developer's 1. Oracle Java SE 21 Developer's advantage is update cadence (every 4 days vs every 9 days). On price, ads, device support 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. 떠먹 asks for nothing beyond the download.

떠먹 ships an update every 9 days, Oracle Java SE 21 Developer every 4 days. The most recent releases landed on September 17, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 떠먹 | Oracle Java SE 21 Developer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 46 MB | 201 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HONG IK LEE](https://appshunter.io/developer/1819512861) | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) |

## What reviewers say

### 떠먹

[App page](https://appshunter.io/ios/app/id6766483338)

**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 떠먹 free?

떠먹 is free to download, 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 떠먹 or Oracle Java SE 21 Developer have ads?

Neither 떠먹 nor Oracle Java SE 21 Developer shows ads.

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

떠먹 ships an update every 9 days, and Oracle Java SE 21 Developer every 4 days. Most recently, 떠먹 was updated on September 17, 2026 and Oracle Java SE 21 Developer on September 22, 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.*