# Leaflet for Swift&Algorithm vs Java面试(Voids)

The clearest difference is rating: Java面试(Voids) at 5.0 against Leaflet for Swift&Algorithm's 4.6. Java面试(Voids) also leads on iOS requirement (17.0 vs 26.0). Leaflet for Swift&Algorithm's advantage is ratings volume (297 vs 5). On price, review sentiment, update cadence and ads there is nothing between them.

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

Java面试(Voids) 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 split almost evenly too, at 71% and 71% positive.

Leaflet for Swift&Algorithm ships an update every 6 days, Java面试(Voids) every 10 days. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Leaflet for Swift&Algorithm | Java面试(Voids) |
| --- | --- | --- |
| 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/javavoids-java/id1523010254/reviews)** |
| Number of ratings | **297** | 5 |
| Positive reviews | 71.4% of reviews | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 10 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 54 MB | 82 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [雷 戴](https://appshunter.io/developer/696880612) | [雷 戴](https://appshunter.io/developer/696880612) |

## 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)


### Java面试(Voids)

[App page](https://appshunter.io/ios/app/javavoids-java/id1523010254)

This app provides a comprehensive question bank for Java technical interviews, covering a wide range of topics. It aims to help users identify knowledge gaps and prepare effectively for interviews through extensive practice. The content includes detailed explanations and is designed to assist developers in mastering interview essentials.

**Highlights:** Extensive Java interview question bank, Covers JVM, Spring, Microservices, Databases, and more, Detailed explanations and visual aids, Helps identify knowledge gaps, Practice for technical interviews

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 升级为Pro | $0.99 | 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 Java面试(Voids) free?

Java面试(Voids) is free to download, with in-app purchases available.

### Which has better reviews, Leaflet for Swift&Algorithm or Java面试(Voids)?

Java面试(Voids) is rated higher. Leaflet for Swift&Algorithm averages 4.6 out of 5 from 297 ratings, while Java面试(Voids) averages 5.0 from 5 ratings.

### Do Leaflet for Swift&Algorithm or Java面试(Voids) have ads?

Neither Leaflet for Swift&Algorithm nor Java面试(Voids) shows ads.

### Which is updated more often, Leaflet for Swift&Algorithm or Java面试(Voids)?

Leaflet for Swift&Algorithm ships an update every 6 days, and Java面试(Voids) every 10 days. Most recently, Leaflet for Swift&Algorithm was updated on September 21, 2026 and Java面试(Voids) on September 14, 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.*