# JSBox vs Leaflet for Swift&Algorithm

The clearest difference is rating: Leaflet for Swift&Algorithm at 4.6 against JSBox's 4.0. Leaflet for Swift&Algorithm also leads on review sentiment (71% vs 50%) and update cadence (every 6 days vs fortnightly). JSBox's advantage is chart position (#69 vs unranked) and iOS requirement (14.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. JSBox sells 2 in-app purchases, starting at $7.99 per year and Leaflet for Swift&Algorithm sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Leaflet for Swift&Algorithm holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 85 and 297 respectively. Written reviews point the same way: 50% of JSBox's written reviews are positive against 71% of Leaflet for Swift&Algorithm's.

JSBox ships an update fortnightly, Leaflet for Swift&Algorithm every 6 days. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | JSBox | Leaflet for Swift&Algorithm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (85 ratings)](https://appshunter.io/ios/app/jsbox-learn-to-code/id1312014438/reviews) | **[4.6 (297 ratings)](https://appshunter.io/ios/app/leaflet-for-swift-and-algorithm/id1420814118/reviews)** |
| Number of ratings | 85 | **297** |
| Positive reviews | 49.5% of reviews | **71.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#69** | — |
| Size | 178 MB | 54 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [颖 钟](https://appshunter.io/developer/928924733) | [雷 戴](https://appshunter.io/developer/696880612) |

## What reviewers say

### JSBox

[App page](https://appshunter.io/ios/app/jsbox-learn-to-code/id1312014438)

**Currently charting:** #69 Top Grossing · Developer Tools (US App Store)

This app is a mobile JavaScript IDE that allows users to learn and write JavaScript code. It provides tools to create native iOS utilities, widgets, extensions, and more, catering to both beginners and experienced developers.

**Highlights:** Mobile JavaScript IDE, Create native iOS utilities, Design widgets and keyboards, Siri/Shortcuts integration, Beautiful code editor, Advanced development tools, iOS extension support

**Features:** Safari Extension

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JSBox Pro | $7.99 | per year |
| JSBox Pro - Discount | $7.99 | per year |


### Leaflet for Swift&Algorithm

[App page](https://appshunter.io/ios/app/leaflet-for-swift-and-algorithm/id1420814118)

This app offers comprehensive learning modules for Swift, SwiftUI, and Combine, alongside data structures and algorithms. It provides micro-classes, tutorials, code style guides, and practical examples to help users master programming concepts and develop efficient applications.

**Highlights:** Swift language tutorials, SwiftUI and Combine development, Data structure and algorithm learning, Micro-classes for core concepts, Code style guide, Algorithm problem-solving examples

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Pro Version | $0.99 | one-time |

**What reviewers like**

- 👍 Good explanations
- 👍 Easy to use
- 👍 Clean interface
- 👍 Helpful for learning
- 👍 Lovely app

**What reviewers complain about**

- 🐛 Solutions not loading
- 🐛 App crashes on launch
- 🐛 Frequent crashes
- 🐛 Not a true dark mode
- 🐛 Code formatting issues

**Reported bugs**

- Solutions for problems are not loading
- App crashes on first load
- App crashes immediately on launch
- App crashes after first use and backgrounding
- Paid for pro user, but no answers for many questions

**Requested features**

- Add more iOS technical upgrades
- Add filter options for algorithms (e.g., top 100, top 200)
- Allow users to write their own notes for algorithms
- Add JavaScript examples
- Allow users to suggest/edit explanations (wiki-like)


## Frequently asked questions

### Is JSBox free?

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

### Is Leaflet for Swift&Algorithm free?

Leaflet for Swift&Algorithm is free to download, with in-app purchases available.

### Which has better reviews, JSBox or Leaflet for Swift&Algorithm?

Leaflet for Swift&Algorithm is rated higher. JSBox averages 4.0 out of 5 from 85 ratings, while Leaflet for Swift&Algorithm averages 4.6 from 297 ratings.

### Do JSBox or Leaflet for Swift&Algorithm have ads?

Neither JSBox nor Leaflet for Swift&Algorithm shows ads.

### Which is updated more often, JSBox or Leaflet for Swift&Algorithm?

JSBox ships an update fortnightly, and Leaflet for Swift&Algorithm every 6 days. Most recently, JSBox was updated on September 24, 2026 and Leaflet for Swift&Algorithm on September 21, 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.*