Mobile Crossword puzzle app

I’m looking to develop a crossword puzzle app. Looks pretty much like any other crossword app except that each word has THREE clues (Harder, Medium and Easier).
When a clue has been viewed by the solver, the background “fill” of the word’s squares show which clue has been viewed. (The harder clue is represented by Light Orange/Yellow, the Medium clue by Light blue and the easier clue by Light pink). The background only changes when a “lesser” clue is viewed. If a crossing-over word has a “lesser” colour letter, it will remain that colour.
There is also a “Show Me” option that enters the next letter in the current word. If the “Show Me” button is used for a letter, the background will change to White.
All crosswords will be 12x12 squares.
At the end of each game a score is determined from the background colours.
I have created (by photoshop) a sample page and a playing page. The jpegs and photoshop documents would, of course, be available.
I have written a more comprehensive explanation of the program requirements if you are interested in quoting/proceeding.