# NJO vs Prep Arena

The clearest difference is in-app purchases: NJO at none against Prep Arena's 2. NJO also leads on iOS requirement (11.0 vs 14.0). Prep Arena's advantage is device support. On price there is nothing between them.

Both are free to download. Prep Arena sells 2 in-app purchases, starting at $1.99 per month. NJO asks for nothing beyond the download.

## The numbers

| Metric | NJO | Prep Arena |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prep-arena/id6759354039/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 37 MB | 7 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | — | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Abubacker Mannankuzhiyan Padianchalil](https://appshunter.io/developer/1659989374) | [DHAWAN INC](https://appshunter.io/developer/1807477489) |

## What reviewers say

### NJO

[App page](https://appshunter.io/ios/app/njo/id6470370736)

**In-app purchases:** none


### Prep Arena

[App page](https://appshunter.io/ios/app/prep-arena/id6759354039)

This app gamifies preparation for competitive exams by pitting users against each other in real-time question battles. It identifies weak areas and provides personalized lesson plans to improve performance. Users can track progress with a chess-style rating system and compete in various game modes.

**Highlights:** Head-to-head MCQ battles, Chess-style PAR rating system, Multiple game modes, 10 Lakh+ NCERT-aligned questions, Daily challenges and tournaments, Spaced repetition learning, Learning analytics

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prep Arena Pro - Monthly | $1.99 | per month |
| Prep Arena Pro - 6 Months | $8.99 | per 6 months |


## Frequently asked questions

### Is NJO free?

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

### Is Prep Arena free?

Prep Arena is free to download, with in-app purchases available.

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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.*