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V2 updates! - Custom time interval for distraction free mode - Ability to turn off ' always on' mode - Improved UI -- Self Control -- A simple app to keep you focused online by blocking sites that you spend way too much time on.

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.

Which is more popular?
SelfControl might be a bit more popular than HackerRank. We know about 79 links to it since March 2021 and only 67 links to HackerRank.
Website, pricing, platforms and company facts side by side.
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| Website | selfcontrolapp.com | hackerrank.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
SelfControl is ideal for students who need to concentrate on studying, remote workers who want to avoid procrastination, freelancers who require discipline in managing their time, and anyone who needs a simple solution to reduce digital distractions during focused work periods.
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.
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


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


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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...
Recommendations tracked on public social media and blogs since March 2021.


A combination of https://selfcontrolapp.com/ and Hammerspoon automation and you can lock yourself out of pretty much everything. - Source: Hacker News / 6 months ago
Happy to see it still exists, and free https://selfcontrolapp.com/. - Source: Hacker News / 7 months ago
I have found that a useful method for getting distractions off my work laptop has been https://selfcontrolapp.com/ (if you're on mac). - Source: Hacker News / about 1 year ago
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
When comparing SelfControl and HackerRank, you can also consider the following products.

Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!
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Practice and level up your development skills and prepare for technical interviews.
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Freedom is a productivity hack that lets you block apps, websites or the entire Internet on iPhones, iPads, Windows and Mac computers.
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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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CodeSignal is the leading assessment platform for technical hiring.
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