# Learn JavaScript Development vs Learn Underscore.js Offline

The clearest difference is update cadence: Learn JavaScript Development at every 4 months against Learn Underscore.js Offline's every 21 months. Learn JavaScript Development also leads on iOS requirement (11.0 vs 13.0). Learn Underscore.js Offline's advantage is price ($1.99 vs $2.99). On ads, in-app purchases and device support there is nothing between them.

Learn JavaScript Development costs $2.99 and Learn Underscore.js Offline $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Learn JavaScript Development ships an update every 4 months, Learn Underscore.js Offline every 21 months. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Learn JavaScript Development | Learn Underscore.js Offline |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.4 (33 ratings)](https://appshunter.io/ios/app/learn-javascript-development/id1481192126/reviews)** | — |
| Number of ratings | **33** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 21 months |
| Monetization | Paid | — |
| Size | 81 MB | 38 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shahbaz Khan](https://appshunter.io/developer/1479963383) | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) |

## What reviewers say

### Learn JavaScript Development

[App page](https://appshunter.io/ios/app/learn-javascript-development/id1481192126)

Master front-end and back-end development with comprehensive JavaScript tutorials. Learn basic to advanced concepts, including popular frameworks like React, Angular, and Vue.js, all available offline.

**Highlights:** Complete JavaScript path, Front-end & Back-end development, ES6 & ES.Next, Popular frameworks (React, Angular, Vue), Offline access, Ad-free experience, Interview questions

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

**In-app purchases:** none


### Learn Underscore.js Offline

[App page](https://appshunter.io/ios/app/learn-underscorejs-offline/id6738279319)

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

**In-app purchases:** none


## Frequently asked questions

### Is Learn JavaScript Development free?

Learn JavaScript Development costs $2.99, with no in-app purchases.

### Is Learn Underscore.js Offline free?

Learn Underscore.js Offline costs $1.99, with no in-app purchases.

### Do Learn JavaScript Development or Learn Underscore.js Offline have ads?

Neither Learn JavaScript Development nor Learn Underscore.js Offline shows ads.

### Which is updated more often, Learn JavaScript Development or Learn Underscore.js Offline?

Learn JavaScript Development ships an update every 4 months, and Learn Underscore.js Offline every 21 months. Most recently, Learn JavaScript Development was updated on November 3, 2026 and Learn Underscore.js Offline on November 11, 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.*