
LeetCode
Codility
CodeSignal
iMocha
HackerEarth
Codewars
TestGorilla
HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.

Growth.Design Case Studies
Mobbin
Muz.li
Uxcel
Weekly UX Exercise
Refero Design
Talks by UI Patterns
A collection of UX case studies

Which is more popular?
Based on our record, HackerRank should be more popular than Built for Mars. It has been mentioned 67 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | hackerrank.com | builtformars.com |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
HackerRank is recommended for students, individual learners, and job seekers looking to improve their coding skills, as well as for companies seeking an efficient way to evaluate candidates' technical abilities during the hiring process.
No analysis of Built for Mars yet.
Walkthroughs and reviews on video.
Is HackerRank A Good Idea?
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using HackerRank and Built for Mars. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship...
HackerRank’s challenges cover a wide range of topics and difficulty levels, allowing developers to enhance their problem-solving skills and learn new algorithms and data structures. The competitive nature of...
HackerRank offers a wide array of challenges across various domains such as algorithms, mathematics, SQL, and functional programming. Its interface is user-friendly, and the platform provides detailed feedback on...
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Recommendations tracked on public social media and blogs since March 2021.


This way, you transfer what you already know (problem-solving) but only change the syntax. Platforms like Hackerrank are also great to solve the same problem in different languages and learn from other people’s solutions. - Source: dev.to / about 1 year ago
Firstly, solve some common data structure problems with it. Implement some data structures like arrays, linked lists, stacks, queues, etc. You can check common problems on LeetCode, Hackerank or some other resources. - Source: dev.to / over 2 years ago
I don't have a consecutive internet connection and I can't keep up learning process so I started practicing in hackerrank.com I have started some challenges in python and c++ there. Thus I have no internet connection so I cannot practice... Source: almost 3 years ago
Maybe I’m looking in the wrong places but I’m tired of seeing numbered lists of “Design trends to look out for in 202X” with 4 sentences of text between them. I crave longer forms of writing that explains the design aspect of this field.... Source: over 3 years ago
Some other recommendations: Don’t Make me Think and Rocket Surgery Made Easy by Steve Krug https://builtformars.com/ UX case studies https://www.nngroup.com/ UX analyses and articles Coursera has some UX courses you can audit for free. - Source: Hacker News / over 3 years ago
Consider that even if you don't have a big portfolio of work, you can do analysis of existing apps / websites / experiences, even a game. Take a look at the case studies here: https://builtformars.com/. Source: almost 4 years ago
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