# Algorithms vs Java面试题库

The clearest difference is monetization model: Algorithms at free against Java面试题库's freemium. Algorithms also leads on update cadence (every 3 weeks vs every 2 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Algorithms sells 3 one-off in-app purchases and Java面试题库 sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Algorithms ships an update every 3 weeks, Java面试题库 every 2 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Algorithms | Java面试题库 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/algorithms-animation-display/id1624248084/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 78.6% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Freemium |
| Size | 25 MB | 118 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [森 林](https://appshunter.io/developer/501130350) | [嘉 邱](https://appshunter.io/developer/1708883953) |

## What reviewers say

### Algorithms

[App page](https://appshunter.io/ios/app/algorithms-animation-display/id1624248084)

Learn algorithm concepts through interactive animations and code explanations. Master complex problems with a step-by-step visual approach, ideal for interview preparation and efficient learning.

**Highlights:** Interactive algorithm animations, Code explanations with subtitles, Step-by-step learning process, Categorized algorithm problems, Visual debugging aid, Focus on understanding ideas and code

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock easy problems | $2.99 | one-time |
| Unlock medium & hard problems | $3.99 | one-time |
| Unlock all problems | $5.99 | one-time |


### Java面试题库

[App page](https://appshunter.io/ios/app/java/id6467860145)

This app provides a comprehensive collection of Java interview questions, covering basic, intermediate, and advanced topics. It includes specialized sections on popular frameworks and technologies like Spring, microservices, Redis, and message queues to help job seekers prepare effectively.

**Highlights:** Covers common Java interview questions, Includes basic, intermediate, and advanced topics, Features Spring, microservices, Redis, and message queues, Offers systematic topic explanations, Ad-free experience with VIP subscription, Unlock all content with VIP

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月付费会员 | $0.99 | per month |
| 季度付费会员 | $2.99 | per 3 months |
| 半年付费会员 | $3.99 | per 6 months |


## Frequently asked questions

### Is Algorithms free?

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

### Is Java面试题库 free?

Java面试题库 is free to download, with in-app purchases available.

### Do Algorithms or Java面试题库 have ads?

Neither Algorithms nor Java面试题库 shows ads.

### Which is updated more often, Algorithms or Java面试题库?

Algorithms ships an update every 3 weeks, and Java面试题库 every 2 months. Most recently, Algorithms was updated on October 5, 2026 and Java面试题库 on October 12, 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.*