# Leaflet for Swift&Algorithm vs Codereader.dev

The clearest difference is review sentiment: Codereader.dev at 100% against Leaflet for Swift&Algorithm's 71%. Codereader.dev also leads on rating (5.0 vs 4.6) and iOS requirement (13.4 vs 26.0). Leaflet for Swift&Algorithm's advantage is ratings volume (297 vs 5). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Leaflet for Swift&Algorithm sells 1 one-off in-app purchase and Codereader.dev sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Codereader.dev holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Leaflet for Swift&Algorithm has 297 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 71% of Leaflet for Swift&Algorithm's written reviews are positive against 100% of Codereader.dev's.

Leaflet for Swift&Algorithm ships an update every 8 days, Codereader.dev every 2 weeks. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Leaflet for Swift&Algorithm | Codereader.dev |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (297 ratings)](https://appshunter.io/ios/app/leaflet-for-swift-and-algorithm/id1420814118/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/codereaderdev/id6444749484/reviews)** |
| Number of ratings | **297** | 5 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 53 MB | 46 MB |
| Requires iOS | 26.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [雷 戴](https://appshunter.io/developer/696880612) | [Matias Andrade Guzman](https://appshunter.io/developer/1656626837) |

## What reviewers say

### 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)


### Codereader.dev

[App page](https://appshunter.io/ios/app/codereaderdev/id6444749484)

Capture code ideas and notes on the go, read code comfortably on your phone with customizable displays, and support multiple programming languages. This tool aims to make your coding life more flexible and convenient.

**Highlights:** Capture code ideas on the fly, Read code comfortably on phone, Customizable display, Multi-language support, Quick code reviews, Jot down notes

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Codereader Pro | $4.99 | one-time |


## Frequently asked questions

### Is Leaflet for Swift&Algorithm free?

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

### Is Codereader.dev free?

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

### Which has better reviews, Leaflet for Swift&Algorithm or Codereader.dev?

Codereader.dev is rated higher. Leaflet for Swift&Algorithm averages 4.6 out of 5 from 297 ratings, while Codereader.dev averages 5.0 from 5 ratings.

### Do Leaflet for Swift&Algorithm or Codereader.dev have ads?

Neither Leaflet for Swift&Algorithm nor Codereader.dev shows ads.

### Which is updated more often, Leaflet for Swift&Algorithm or Codereader.dev?

Leaflet for Swift&Algorithm ships an update every 8 days, and Codereader.dev every 2 weeks. Most recently, Leaflet for Swift&Algorithm was updated on October 10, 2026 and Codereader.dev on October 7, 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.*