Thank you so much. This is by far my faviorite app for my kids (and "MathTables" which is also excellent). My 2nd grader just completed all his division today at school. He is top of his class, and the rest of the kids are still doing adding/subtracting. Litterally I owe it 90% to this app (and makeing him do it before playing his Wii games)! Seriously, Thanks. As a fellow programer I have to let you know you have made a FLEXIBLE applicaiton that has changed a kid's education for the better. Thats cool.
Only addition I can recomend is perhaps an option for the accuracy of the resutls. Eg. say 8x7=56, perhaps you can set the level of difficulty of the correct answers from 40-60 (with 56 being right), to mayber 52-58 (again 56 is right, but closer answers make it harder)? Ie a answer range value (+/-30, or +/-15, or +/-5). Just a thought. Otherwise the flexiblity to select exaclty what numbers to use it awsome as a parent. With my 5 year old I have settings for numbers 1-4, then 1-5, and then 1-6, etc as he is progressing with additon. It's great as it keeps him and I can advance him as he's ready.
Also, perhaps being able to save user settings (ie one for kid "a", and other for kid "b", etc. That would be nice too! But overall great!