A different kind of daily habit, not a bigger kata catalogue
Codewars is a self-paced catalogue of community kata, thousands of problems ranked from easy to hard that you browse and pick from whenever you want. Open Bracket is something else. One challenge a day, chosen for you, the same one for everyone. Here's an honest look at where each one fits.
Where Codewars is the better tool
If you want to practice on your own schedule, picking whatever kata matches your mood or skill level, Codewars is built for exactly that. Its kyu and dan ranking climbs as you clear more kata, giving you a long-term sense of progress across a huge, community-submitted library.
The comment threads on each kata are genuinely useful too. Once you've solved one, you can see other people's approaches and learn a cleaner way to write what you just wrote.
One challenge, chosen for you, not a catalogue to pick from
Open Bracket skips the picking entirely. One challenge a day, the same one for everyone, with a difficulty rhythm that ramps through the week instead of leaving you to guess your own level from a list of thousands. Read more about how the daily rhythm works →
Reading the problem and testing your code against the sample tests is free for anyone, no account required.
Same goal, different shape
Codewars
Thousands of community kata, ranked kyu to dan.
You choose what to solve and when.
Earn honor points as you clear kata.
Open Bracket
One challenge a day, chosen for you, the same one for everyone.
A difficulty rhythm that ramps through the week.
Three leaderboards: Speed, Efficiency, Code golf.
Do we have anything like Codewars' kata catalogue?
Not quite, and not yet at that scale. Once you've closed a daily challenge, it joins Open Bracket's archive, which Open Bracket+ members can browse and replay anytime. It's smaller than Codewars' library today, since we publish one new challenge a day rather than opening the gates to community submissions, but it grows by one every day.
What people usually ask
Is Open Bracket free?
Yes. Reading today's challenge and testing your code against the sample tests is free for anyone, no account needed. Creating a free account unlocks your streak, your history, and a shareable result link.
Should I use Codewars or Open Bracket?
If you want to browse a big library of problems at your own pace, Codewars is the better fit for that. Open Bracket is built for something different. It's a steady, low-pressure daily habit. Plenty of people use both.
Does Open Bracket have a ranking system like kyu and dan?
Not a rank you climb over time, but every challenge places you on three leaderboards: Speed, Efficiency, and Code golf, so you can compete on whichever style suits you.
Can I solve challenges in Python and JavaScript?
Yes, on both platforms. Pick whichever you're most comfortable in.
See for yourself
One challenge a day, chosen for you, no account required to try it. Open today's bracket and see what you can do.