Comparison

Algorithms vs C++ Shell

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

C++ Shell

Compile and run C++ code directly on your mobile device. This app provides a command-line environment with support for basic Linux commands, Python, and Lua. It features code highlighting, split-screen display, and customizable themes for an enhanced coding experience.

Highlights
  • C++ code compilation and execution
  • Linux command-line interface
  • Integrated Python and Lua
  • Code highlighting
  • Split-screen display
  • Customizable themes and fonts
Features
Read full description

A software development tool for compiling and running C++ on mobile devices, with built-in basic environment integrating Python and Lua. Support the execution of Linux basic commands on the console. The implementation principle adopts the compilation mode of llvm and clang. https://github.com/phoenixlabcn/llvm-project Function introduction: The code is highlighted, which is more intuitive Split screen display is supported in horizontal screen mode Console output and input, supporting the output of specific error stack information Theme and font size setting, moving cursor, convenient reading and simple operation Supported Linux commands include: ls,lli,ifconfig,ping,readlink,chmod,clang,telnet,host,du,link,dig,egrep,bc,date,gzip,nslookup,python2,fgrep,mv,md5,say,luac,ssh-keygen,xargs,diff,cd,tee,chksum,lua,touch,dc,tar,chflags,rm,sort,uniq,awk,printenv,chgrp,find,mkdir,tail,df,pwd,opt,chown,gunzip,compress,llvm-link,nc,uptime,sed,setenv,stat,uname,sum,head,wc,cat,echo,unsetenv,unlink,rmdir,uncompress,curl,ln,cp,whoami,rlogin,tr,env,whois,python,grep,nm,clear,sh,exit,open,python3 ------------------------------------------------ C++ Shell Month Unlock 【Unlimited code runs】 【Unlimited use of console】 【Unlimited use of modules】 【Support custom theme setting】 【Continuous access to more advanced functions】 Support free trial for 3 days. After the trial period, this subscription will be renewed automatically for $[4.49]/month unless you actively close or cancel the subscription. You will be charged in your local currency at the prevailing exchange rate as defined by iTunes .The account will confirm and charge you for renewal within 24 hours before the end of the current subscription period. Payment will be deducted from iTunes account upon confirmation of subscription. You can cancel your subscription at any time. You can cancel it at least 24 hours before the trial period or the end of the subscription period to avoid deduction. Any unused part of the trial period after payment will be discarded. After purchase, you can go to the AppStore account settings to manage or cancel your subscription. Privacy policy: https://phoenixlab.ltd/protocols/en/PrivacyStatement.html Terms of Use: https://phoenixlab.ltd/protocols/en/TermsOfUse.html

Screenshots

Algorithms4 screens
C++ Shell4 screens

Verdict

The call

The clearest difference is monetization model: Algorithms at free against C++ Shell's subscription. Algorithms also leads on update cadence (every 3 weeks vs every 3 months) and rating (4.5 vs 4.2). C++ Shell's advantage is ratings volume (224 vs 8) and chart position (#203 vs unranked). On price, ads, in-app purchases and device support 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 C++ Shell sells 1 in-app purchase, starting at $4.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Algorithms holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: C++ Shell has 224 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 79% of Algorithms's written reviews are positive against 58% of C++ Shell's.

UpkeepUpdate frequency

Algorithms ships an update every 3 weeks, C++ Shell every 3 months. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

Scorecard7 real differences · 4 level
Algorithms versus C++ Shell: the parameters behind the verdict, then further details
ParameterAlgorithmsC++ Shell
PriceFreeFree
Rating4.5 (8 ratings) — better4.2 (224 ratings)
Positive reviews78.6% of reviews — better57.9% of reviews
Number of ratings8224 — better
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterSubscription
Best chart rank—#203 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size25 MB153 MB
Age rating4+4+
Developer森 林Phoenix Lab Technology Co., Ltd.

Customer experience

Algorithms

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

C++ Shell

All ratings224 ratings
Positive79.9%
Neutral4.5%
Negative15.6%
Written reviews38 reviews
Positive57.9%
Neutral13.2%
Negative28.9%

In-app purchases

3 purchases

Algorithms

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

C++ Shell

Subscriptions1
  • C++ Shell Advanced Version3 Days trial$4.491 Month

Questions

Is Algorithms free?
Algorithms is free to download, with in-app purchases available.
Is C++ Shell free?
C++ Shell is free to download, with in-app purchases available.
Which has better reviews, Algorithms or C++ Shell?
Algorithms is rated higher. Algorithms averages 4.5 out of 5 from 8 ratings, while C++ Shell averages 4.2 from 224 ratings.
Do Algorithms or C++ Shell have ads?
Neither Algorithms nor C++ Shell shows ads.
Which is updated more often, Algorithms or C++ Shell?
Algorithms ships an update every 3 weeks, and C++ Shell every 3 months. Most recently, Algorithms was updated on September 18, 2026 and C++ Shell on September 21, 2026.

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