Great idea. 99 days still seems pretty far ahead. Would be interesting if you could build in a switch for the max number of days that, when you change them, removes all your existing goal info (to prevent people from adjusting it when they need to buy themselves more time quickly).

Hey Oscar Falmer ( @osfalmer ) just release is little app. The function is to see the goals/challenges that you wanted to accomplish within a short date limit (0-99 days) so you can check your progress everyday and keep motivated.! Well done!