Need some improvement

I like this app just wish there was two things that I had an issue with
1)Wish you could change the ruler to feet and inches not just inches, so when doing conversions you can easily say 3 5 5/16" instead of just seeing 41 5/16". Over larger numbers its not as easy to calculate.
2) I was lazy and did a problem backwards and the fractions where going backwards. So it would show -7 7/8 but it should be -7 1/8 do to the directional problem. Cant have numbers going backwards and fractions going forward.

Goodie83 about Tape Measure Calculator Pro