# devdex vs JS Master

The clearest difference is in-app purchases: JS Master at none against devdex's 2. JS Master also leads on device support (4 vs 2) and iOS requirement (12.0 vs 15.1). On price and ads there is nothing between them.

Both are free to download. devdex sells 2 in-app purchases, starting at $4.99 per month. JS Master asks for nothing beyond the download.

## The numbers

| Metric | devdex | JS Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/devdex/id6478421422/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 33 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Trevor Pennington](https://appshunter.io/developer/1514673614) | [Taalaybek Aslanbek uulu](https://appshunter.io/developer/1785399043) |

## What reviewers say

### devdex

[App page](https://appshunter.io/ios/app/devdex/id6478421422)

This app helps developers practice coding syntax for JavaScript, TypeScript, and Swift. It offers over 200 questions, tracks your progress with a weekly streak, and provides statistics on accuracy and quantity. Links to official language documentation are also included.

**Highlights:** JavaScript, TypeScript, Swift support, Over 200 practice questions, Weekly streak tracker, Accuracy and quantity statistics, Links to language documentation

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Devdex Monthly | $4.99 | per month |
| Devdex - Yearly | $34.99 | per year |


### JS Master

[App page](https://appshunter.io/ios/app/js-master/id6736955510)

**In-app purchases:** none


## Frequently asked questions

### Is devdex free?

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

### Is JS Master free?

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

### Do devdex or JS Master have ads?

Neither devdex nor JS Master 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.*