Number Leaper app for iPhone and iPad

Number Leaper implements an old logic puzzle/game, traditionally played on pen and paper. The game is an example of a Hamiltonian path problem like the somewhat similar, more well-known "knights tour" puzzle.

The game usually has a board of 10×10 squares but Number Leaper has 6 different board sizes available to customize the difficulty level. You can start with a simpler 5×5 board and work your way up to bigger boards.

Key features:
- 6 different board sizes for different levels of challenge
- Statistics that show which starting squares youve found solutions from for each board size
- Settings for enabling/disabling visual cues to help you find valid moves
- The app doesnt need or use data connection at all, so its the perfect pastime for e.g. long flights with the device in flight mode
- Lets you totally concentrate on solving the puzzles: there are no ads, no in-app purchases, no requests to rate the app* — or even sounds to distract you or anyone else

*A review or any feedback is however very much appreciated!