# Learn Javascript Language vs Happiness Hacker

The clearest difference is rating: Happiness Hacker at 4.3 against Learn Javascript Language's 1.0. Happiness Hacker also leads on in-app purchases (none vs 1) and update cadence (every 4 months vs every 16 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Learn Javascript Language sells 1 one-off in-app purchase. Happiness Hacker asks for nothing beyond the download.

Happiness Hacker holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Learn Javascript Language ships an update every 16 months, Happiness Hacker every 4 months. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Learn Javascript Language | Happiness Hacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/learn-javascript-language/id6446464175/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/happiness-hacker/id6469530403/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 28 MB | 3 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ghumman Tech LLC](https://appshunter.io/developer/1671347750) | [Noble and Greenough School](https://appshunter.io/developer/547957767) |

## What reviewers say

### Learn Javascript Language

[App page](https://appshunter.io/ios/app/learn-javascript-language/id6446464175)

Master Javascript programming with this educational app. It offers audio pronunciation of terms, quizzes, study modes, and bookmarking for flashcards and questions. Track your progress through chapters and overall with visual indicators.

**Highlights:** Audio pronunciation of Javascript terms, Text-to-Speech engine for audio, Quizzes for practice, Study mode, Bookmarking for flashcards and quizzes, Progress indicators, Progress visualization

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $9.99 | one-time |


### Happiness Hacker

[App page](https://appshunter.io/ios/app/happiness-hacker/id6469530403)

Track behaviors scientifically proven to boost well-being, including sleep, gratitude, and acts of kindness. Access guided meditations and an online course on the science of happiness. All data is stored locally for privacy.

**Highlights:** Daily happiness and sleep tracker, Gratitude journal, Kindness, connection, savoring, and activity tracker, Guided meditations, Science of Well-Being online course, Strategies for inner critic, strengths, and goal-setting

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Learn Javascript Language free?

Learn Javascript Language is free to download, with in-app purchases available.

### Is Happiness Hacker free?

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

### Which has better reviews, Learn Javascript Language or Happiness Hacker?

Happiness Hacker is rated higher. Learn Javascript Language averages 1.0 out of 5 from 1 ratings, while Happiness Hacker averages 4.3 from 4 ratings.

### Do Learn Javascript Language or Happiness Hacker have ads?

Neither Learn Javascript Language nor Happiness Hacker shows ads.

### Which is updated more often, Learn Javascript Language or Happiness Hacker?

Learn Javascript Language ships an update every 16 months, and Happiness Hacker every 4 months. Most recently, Learn Javascript Language was updated on October 27, 2026 and Happiness Hacker on November 3, 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.*