strange if you have problems to pick the numbers, you tried to use the zoom button? even on galaxy s3 its good to pick
i will fix the button if i get time thank you

i even tought of lifes or score lowering but as an education game it would possible to hard or discouraging for some people
my little nieces play the game too and they might stop immediately cause they are both really young (tried with lifes but one stopped playing after dying two times)

i dunno how much i will work on the game, it is so far my first release there and i already had different plans on other games
it was just something i had in mind for a while and tought it would be a good idea to make a small learning game
maybe Math Warrior 2 will challenging you with gadgets, score losing and lifes but we will see

oh Btw, my next plan would be my competition entry, i reworked the whole concept to fit on mobile phones and think it will now be more fun