# Leaflet for Swift&Algorithm vs Developer Laboratory

The clearest difference is price: Leaflet for Swift&Algorithm at Free against Developer Laboratory's $0.99. Leaflet for Swift&Algorithm also leads on update cadence (every 6 days vs monthly) and ratings volume (297 vs 6). Developer Laboratory's advantage is iOS requirement (12.0 vs 26.0). On rating, ads, in-app purchases and device support there is nothing between them.

Leaflet for Swift&Algorithm is free to download; Developer Laboratory costs $0.99 up front. Leaflet for Swift&Algorithm sells 1 one-off in-app purchase and Developer Laboratory sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Leaflet for Swift&Algorithm against 4.7 for Developer Laboratory. That said, the two scores are not equally well evidenced: Leaflet for Swift&Algorithm has 297 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 71% of Leaflet for Swift&Algorithm's written reviews are positive against 60% of Developer Laboratory's.

Leaflet for Swift&Algorithm ships an update every 6 days, Developer Laboratory monthly. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Leaflet for Swift&Algorithm | Developer Laboratory |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.6 (297 ratings)](https://appshunter.io/ios/app/leaflet-for-swift-and-algorithm/id1420814118/reviews) | **[4.7 (6 ratings)](https://appshunter.io/ios/app/developer-laboratory/id1568656582/reviews)** |
| Number of ratings | **297** | 6 |
| Positive reviews | **71.4% of reviews** | 60.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 54 MB | 9 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [雷 戴](https://appshunter.io/developer/696880612) | [恒盛 程](https://appshunter.io/developer/1533201832) |

## 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)


### Developer Laboratory

[App page](https://appshunter.io/ios/app/developer-laboratory/id1568656582)

This app provides a collection of example code and UI components for iOS developers. It demonstrates various functionalities like app icon creation, image viewing, web page loading, and custom controls. Access the source code to learn implementation details.

**Highlights:** APP icon creation, Imitation of WeChat Moments, Web page loading, Custom UI components, QR code scanning, Facial tracking, Database operations

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 0 ice cola | $0.99 | one-time |
| 1 ice cola | $0.99 | one-time |
| A sip of iced cola | $0.99 | one-time |
| 一元商品 | $0.99 | one-time |
| 2 ice cola | $1.99 | one-time |
| 3 ice cola | $2.99 | one-time |
| 4.16 ice cola | $3.99 | one-time |
| 16.5 ice cola | $14.99 | 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 Developer Laboratory free?

Developer Laboratory costs $0.99, and also offers in-app purchases.

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

Developer Laboratory is rated higher. Leaflet for Swift&Algorithm averages 4.6 out of 5 from 297 ratings, while Developer Laboratory averages 4.7 from 6 ratings.

### Do Leaflet for Swift&Algorithm or Developer Laboratory have ads?

Neither Leaflet for Swift&Algorithm nor Developer Laboratory shows ads.

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

Leaflet for Swift&Algorithm ships an update every 6 days, and Developer Laboratory monthly. Most recently, Leaflet for Swift&Algorithm was updated on September 21, 2026 and Developer Laboratory on September 10, 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.*