# Keep Building! vs J2ME Emulator

The clearest difference is in-app purchases: Keep Building! at none against J2ME Emulator's 3. Keep Building! also leads on iOS requirement (14.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. J2ME Emulator sells 3 in-app purchases, starting at $5.99 per 7 days. Keep Building! asks for nothing beyond the download.

## The numbers

| Metric | Keep Building! | J2ME Emulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.6 (5 ratings)](https://appshunter.io/ios/app/j2me-emulator/id6779461554/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | — | Free |
| Size | 84 MB | 13 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Leshan Wang184213996631](https://appshunter.io/developer/6775586929) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### Keep Building!

[App page](https://appshunter.io/ios/app/keep-building/id6775586927)

**Features:** macOS Compatibility

**In-app purchases:** none


### J2ME Emulator

[App page](https://appshunter.io/ios/app/j2me-emulator/id6779461554)

This app allows you to play classic Java (J2ME) mobile games on your iPhone and iPad. You must provide your own legally obtained game files. It offers customizable controls, screen resolutions, and display scaling for an enhanced retro gaming experience.

**Highlights:** Import .jar game files, On-screen keypad and D-pad, Customizable screen resolution, Multiple display scaling modes, Offline gameplay, Universal app for iPhone and iPad

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Retro Arcade Weekly | $5.99 | per 7 days |
| Feature Phone Yearly | $29.99 | per year |
| Offline Emulator, Pay Once | $59.99 | one-time |


## Frequently asked questions

### Is Keep Building! free?

Keep Building! is free to download, with no in-app purchases.

### Is J2ME Emulator free?

J2ME Emulator is free to download, with in-app purchases available.

### Do Keep Building! or J2ME Emulator have ads?

Neither Keep Building! nor J2ME Emulator shows ads.

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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.*