500
hand-crafted puzzles
5
difficulty levels
1
fresh puzzle daily
100%
playable offline
Why you'll love it
Easy to pick up, genuinely clever to master, and calm enough to enjoy anywhere.
🧩
True crossword logic
Numbers interlock across and down. One smart move unlocks the next.
✅
Instant feedback
A line turns green the moment it's correct, red when it isn't. You reason, you don't guess.
📈
Five difficulty levels
Warm up with addition and subtraction, then grow into multiplication, division and multi-step equations.
📅
Daily Challenge
One fresh number puzzle for everyone, every day. Build your streak.
💡
Smart hints
Stuck? A gentle nudge shows your next move without spoiling the solve.
🌙
Calm, offline design
No account, no Wi-Fi needed, no clutter. Dark mode included.