
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.

Anki
Quizlet
RemNote
Memrise
AnkiDroid
Brainscape
Cram
Write notes and flashcards with Markdown and study them with spaced repetition.

Which is more popular?
HackerRank might be a bit more popular than Mochi. We know about 67 links to it since March 2021 and only 55 links to Mochi.
Website, pricing, platforms and company facts side by side.
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| Website | hackerrank.com | mochi.cards |
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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.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Is HackerRank A Good Idea?
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using HackerRank and Mochi. 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...
Anki, if you want the same app free on every device: Windows, macOS, Linux, Android and the browser through AnkiWeb, with free sync and no ads, and only the official iOS app costs money as a one-time purchase. Mochi's...
One of the biggest advantages of Mochi is that it has a built-in dictionary. This means that you can look up words without having to leave the app. Mochi also has a customizable study schedule, so you can study at...
Mochi also proves to be a suitable alternative due to its good compatibility with the popular flashcard app Anki. It’s easy to import your Anki decks into Mochi, so you can immediately use all shared Anki decks in Mochi.
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
It's not FOSS but Mochi [0] is a pretty good alternative. [0] https://mochi.cards/. - Source: Hacker News / 7 months ago
Possible alternative to check out (not affiliated): https://mochi.cards/. - Source: Hacker News / 7 months ago
I would like to see randomized control group studies using study mode. Does it offer meaningful benefits to students over self directed study? Does it out perform students who are "learning how to learn"? What affect does allowing... - Source: Hacker News / about 1 year ago
When comparing HackerRank and Mochi, you can also consider the following products.

Practice and level up your development skills and prepare for technical interviews.
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Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
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Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
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Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.
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CodeSignal is the leading assessment platform for technical hiring.
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