Comparison

Algorithms vs Java面试题库

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Algorithms

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
Read full description

Did you pass the interview algorithm question? Learning algorithm questions takes too much time? Not your problem! Before this, no algorithmic learning method could be so simple and efficient. It only takes three steps to become an algorithm master: The first step is to read the question; The second step is to play the animation, refer to the subtitles, and understand the ideas and codes; The third step is to read, analyze and summarize; Why do you make an algorithm animation diagram app? Like many programmers, I have to prepare a lot of time to brush up the algorithm every time I change jobs. Very good, in the process of brushing the questions, you must first read the solution. I also read a lot of problem solutions from big guys on the Internet, and I especially like to read algorithm analysis with moving pictures or schematic diagrams, which is faster than reading text. In the process, several problems were also found, such as: the animation is not interactive and cannot be paused; the data is dead and cannot be changed; it is not convenient to study on the mobile phone, etc. I saw some good animations at the beginning, and I had a strong urge to implement them in the app with native code several times. This time I finally made up my mind and made 70 animations in one go. I understand that the positioning of this app is a tool that can help us quickly understand algorithm ideas and codes, help memory, and improve learning efficiency. But here you can't submit, you can't execute the code, and the code still needs to be typed on the computer to make it feel better. Why is it not arranged in the order of the leetcode number? At present, the algorithm questions are classified into three major blocks: - linked list, string, array, binary tree; - Backtracking, greedy, dynamic programming, divide and conquer; - Sort and classify separately. Under each category, the difficulty is divided into easy, medium and hard. First classify data structures and algorithms separately, and learn according to knowledge points. For example, you can concentrate on learning binary tree structures or dynamic programming algorithms, so that concentrated saturation training can help improve learning efficiency. The data structure comes first, and the algorithm follows, which is also arranged in the order in which we learn theoretical knowledge. In terms of algorithms, four types are currently arranged: backtracking, greedy, dynamic programming, and divide-and-conquer. When I learned data structures and algorithms many years ago, I first came into contact with various sorting algorithms. At that time, I felt that sorting was too difficult, and I was very impressed, so I made a separate sorting classification for beginners. Thinking on how to combine animation and code and other interactive issues - In the process of learning algorithms by myself, I often understand the ideas, but I can't understand the codes, and many codes in the text explanations have no comments. Seeing this is a big headache. Therefore, when thinking about App interaction, the code highlighting function is specially designed, which means that each line of code will be highlighted as the animation progresses. In this way, the animation is executing, the code is highlighted, and it looks cool. - Although the animation is easy to understand, it still needs some short explanations, so the "subtitle" function is designed below the animation. Every time the corresponding step is executed, the corresponding explanation will be displayed. - Animation playback and reset, each algorithm page has a playback function, so how to prepare test cases? To simplify the concept of test cases, a "reset" button is designed, which means that the test cases are random. When you want to change a set of data, just click reset.

About

Java面试题库

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
Read full description

学历拼不过别人,经验拼不过别人,你能拼的就是八股文。本App覆盖市面上常见的java面试题目,基础题、中高级题目、spring全家桶、微服务,redis,消息队列等。 --我希望每个求职者都能找到自己满意的工作 【java面试题库自动续订VIP说明】 --java面试题库-VIP权益: 订阅后可解锁全部面试题型内容,包括中高级题型、场景题包含各个大厂真题、web等题型、系统化专题讲解及更新内容;不限次数访问,无广告干扰。 --订阅周期:月付费会员(连续包月产品)、季度付费会员(连续包季产品)、半年付费会员(连续包半年产品)。 --订阅服务名称与价格: java面试题库-VIP:月付费会员-连续包月价格:$0.99/每月,免费试用七天。 java面试题库-VIP:季度付费会员-连续包季价格:$1.99/每季,免费试用七天。 java面试题库-VIP:半年付费会员-连续包半年价格: $2.99/半年,免费试用七天。 --付款:用户确认购买并付款后记入iTunes账户。 --用户可以通过用户的帐户设置来管理用户的订阅和自动更新。 --取消续订:如需取消续订,请在当前订阅周期到期前24小时以前,手动在iTunes/Apple ID设置管理中关闭自动续订功能。 --续订:苹果iTunes账户会在到期前24小时内扣费,扣费成功后订阅周期顺延一个订阅周期。 --首月免费试用:免费试用期内再次续订或者取消续订,不会向用户收回免费试用权益,用户可以继续试用直至试用周期结束。 --隐私政策:https://blog.csdn.net/MyEclipse927/article/details/133379708?spm=1001.2014.3001.5501 --使用条款:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Algorithms4 screens
Java面试题库4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Algorithms versus Java面试题库: the parameters behind the verdict, then further details
ParameterAlgorithmsJava面试题库
PriceFreeFree
Rating4.5 (8 ratings) — better—
Positive reviews78.6% of reviews80.0% of reviews — better
Number of ratings8 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.0
Further details — not scored
Size25 MB118 MB
Age rating4+4+
Developer森 林嘉 邱

Customer experience

Algorithms

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews14 reviews
Positive78.6%
Neutral7.1%
Negative14.3%

Java面试题库

Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

In-app purchases

3 purchases

Algorithms

One-time3
  • Unlock easy problems$2.99
  • Unlock medium & hard problems$3.99
  • Unlock all problems$5.99
3 purchases

Java面试题库

Subscriptions3
  • 月付费会员7 Days trial$0.991 Month
  • 季度付费会员7 Days trial$2.993 Months
  • 半年付费会员7 Days trial$3.996 Months

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.

Other comparisons