Contact us
Need help or have feedback? Email us at d23ai.in@gmail.com and we'll get back to you.
How to play
- Press a dot and drag to connect every line on the board.
- You must draw the whole puzzle in a single stroke — never lift your finger and never retrace a line.
- Stuck? Tap Hint for the next move (the first hint is free; more are available by watching an optional rewarded ad).
- Use Undo or Restart anytime.
Daily Challenge & streaks
Play the Daily Challenge each day to build and keep your streak. A new puzzle appears every day.
Frequently asked
Do I need an account?
No. Monoline has no login — just open and play. Your progress is saved on your device.
No. Monoline has no login — just open and play. Your progress is saved on your device.
Is it free?
Yes. Monoline is free and supported by ads. There are no in-app purchases.
Yes. Monoline is free and supported by ads. There are no in-app purchases.
Does it work offline?
Yes — all puzzles work offline. Only ads require an internet connection.
Yes — all puzzles work offline. Only ads require an internet connection.
How do I manage ad tracking?
You can decline tracking in the prompt shown on first launch, or change it in iOS Settings → Privacy & Security → Tracking.
You can decline tracking in the prompt shown on first launch, or change it in iOS Settings → Privacy & Security → Tracking.
Privacy
See our Privacy Policy.