# NJCT vs Quantgym

The clearest difference is in-app purchases: NJCT at none against Quantgym's 1. NJCT also leads on iOS requirement (11.0 vs 15.1). Quantgym's advantage is update cadence (every 4 months vs every 30 months). On price, ads and device support there is nothing between them.

Both are free to download. Quantgym sells 1 one-off in-app purchase. NJCT asks for nothing beyond the download.

NJCT ships an update every 30 months, Quantgym every 4 months. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | NJCT | Quantgym |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 4 months** |
| Size | 33 MB | 52 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NJ Technologies](https://appshunter.io/developer/592382047) | [TagMango Inc](https://appshunter.io/developer/1611765353) |

## What reviewers say

### NJCT

[App page](https://appshunter.io/ios/app/njct-open-learning-resource/id1459989408)

**Features:** Vision Pro support

**In-app purchases:** none


### Quantgym

[App page](https://appshunter.io/ios/app/quantgym/id1645063953)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subhadip Nandy | $49.99 | one-time |


## Frequently asked questions

### Is NJCT free?

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

### Is Quantgym free?

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

### Do NJCT or Quantgym have ads?

Neither NJCT nor Quantgym shows ads.

### Which is updated more often, NJCT or Quantgym?

NJCT ships an update every 30 months, and Quantgym every 4 months. Most recently, NJCT was updated on October 7, 2026 and Quantgym on October 18, 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.*