Build your coding skills with practice that feels active.
Join live challenges, work through AI-guided sessions, share problems, and connect with developers learning alongside you.
Compete in live coding matches
Jump into timed head-to-head challenge, solve real problems in our integrated editor, and review results when the match is done.
Practice with the Oracle
Start guided sessions tailored to your language and goals, work through generated problems, and get feedback that helps you improve.
Learn with a developer community
Discover other developers, share community problems, start chats, and find people who match how you want to learn or build.
Other features
Account authentication, verified emails, and permission checks help keep private matches, chats, and shared problems protected.
Get updates when requests, invitations, chats, and shared problems need your attention.
Realtime sockets keep match rooms, observers, chats, and notifications feeling current without constant refreshes.
Filter developers, matches, sessions, chats, and problems by the details that matter most.
Send, accept, reject, or revoke friend requests, match challenges, observer invites, and shared problem access.
Keep active work, pending actions, recent messages, and profile reminders visible from one dashboard.