What is Mila's Tools? Mila's Tools is an elegant, no frills, easy to use, FREE unit conversion calculator. Included are a time converter, length converter, temperature converter, liquid converter and weight converter - all built exclusively for the Apple iPhone. Where'd the name come from? My wife's name is Mila and I adore my wife. Sometimes she asks me to build her software to make her life easier. This app is a result of one of those times.