Daily Personalized Problems
Get fresh coding challenges every day, curated to match your skill level. No more guessing what to practice next.
Free on iOS & Android
Master Coding,
One Problem at a Time
Build consistent coding habits with personalized daily challenges tailored to your skill level and favorite programming language.
6
Languages
3
Skill Levels
Daily
New Problems
Everything You Need to Level Up
From beginner to advanced, build real problem-solving skills with tools designed for daily practice.
Three Skill Levels
Whether you're a newbie or a seasoned coder, problems adapt to where you are — Beginner, Intermediate, or Advanced.
Streak & Progress Tracking
Stay motivated with daily streaks, detailed stats, and visual progress tracking to see how far you've come.
Syntax-Highlighted Solutions
Review clean, beautifully formatted solutions with full syntax highlighting in your preferred language.
Offline Support
Downloaded problems are cached locally so you can practice anywhere — on the subway, on a plane, or off the grid.
Smart Reminders
Never miss a day with push notifications that remind you to complete your daily problems at the right time.
Practice in Your Language
Choose your preferred programming language and get solutions tailored to it.
Java
Python
C++
JavaScript
C#
Go
PRO
Unlock Your Full Potential
Go beyond the basics with Pro — more problems, full archives, and an ad-free experience.
Up to 3 daily problems
Full problem archive
All solution approaches
Bookmark problems
Completely ad-free
Monthly & yearly plans
Start Solving Today
Join thousands of developers building better coding habits, one problem at a time. It's free.