
Codecademy
Exercism
LeetCode
Treehouse
edX
Coursera
Udemy
Achieve code mastery through challenge.

LeetCode
DataLemur
Datacamp
HackerRank
Codecademy
PrepNPlaced
SkillVee
StrataScratch is a data science interview platform that has over 1000+ real interview questions from top tech companies like Facebook, Amazon, Google, and more.

Which is more popular?
Based on our record, Codewars seems to be a lot more popular than StrataScratch. While we know about 160 links to Codewars, we've tracked only 4 mentions of StrataScratch.
Website, pricing, platforms and company facts side by side.
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| Website | codewars.com | stratascratch.com |
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What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Codewars is recommended for beginner to advanced programmers who enjoy learning through practice and are interested in improving their algorithmic thinking and coding skills in a gamified environment. It is particularly beneficial for those preparing for coding interviews or seeking to reinforce their programming knowledge in a fun and interactive way.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Codewars Review & Tips
More videos
Practice Writing SQL Queries on StrataScratch | How to Solve SQL Queries
More videos
How often each product is chosen within a category, 0–100% relative to the other.


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


Edabit offers a learning experience similar to learning a new language, focusing on smaller and more frequent exercises that build proficiency over time. Like Codewars, Edabit provides many challenges that increase in...
In conclusion, while Leetcode remains a valuable resource for coders, the platforms listed above offer varied approaches to learning and improving coding skills. Whether you're drawn to the gamified learning...
This LeetCode alternative has excellent features for anyone looking to sharpen their coding skills. Codewars uses kata, which are small coding exercises that are community developed to help you master your language of...
StrataScratch offers free data science interview questions and continues to release interview questions when they come out from companies. This ensures that you are always practicing your data science skills on...
Recommendations tracked on public social media and blogs since March 2021.


Recently, I was working on a coding kata on codewars.com. Early on, I started thinking that a potential solution might utilize recursion, a concept that involves a function calling itself. However, I quickly realized that my grasp of... - Source: dev.to / almost 3 years ago
Get more involved. Look into internships and junior SWE positions to get a sample of what you'd be applying for once you graduate. Solve coding challenges, start working on a portfolio of your personal works. I recommend codewars.com for... Source: almost 3 years ago
I'd recommend to play around with some basic coding challenges on leetcode.com or codewars.com. If the course prepared you well you won't find this useful, but playing around with them will make sure that you are comfortable with basics... Source: over 3 years ago
StrataScratch is focused on providing data analysis/science resources needed to land a job and resources for the first few years of your career. It has 600+ coding questions from real interviews where you can use SQL, python, or R. It... Source: over 3 years ago
I learned off of Mode Analytics SQL tutorial. It's free and I use it as a reference when I forget syntax. From there, my learning style is to grind on practical questions that I would get as a data analyst. So I would recommend... Source: over 3 years ago
There was a comment here about using Leetcode, Hackerrank, SQL fiddle, etc to keep learning SQL. However, if you're aim is to go into data analytics you need to go beyond learning syntax and understand edge cases and business context.... Source: over 3 years ago
When comparing Codewars and StrataScratch, you can also consider the following products.

Learn the technical skills you need for the job you want. As leaders in online education and learning to code, we’ve taught over 45 million people using a tested curriculum and an interactive learning environment.
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Practice and level up your development skills and prepare for technical interviews.
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Download and solve practice problems in over 30 different languages.
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Practice SQL Interview Questions & Data Science Interview Questions asked by FAANG.
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DataCamp is a massive open online course (MooC) platform that helps everyone from novices to experts hone their skills with data science.
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Treehouse is an award-winning online platform that teaches people how to code.
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