darkvoid :
Alabalcho :
As a training / learning tool - yes, for sure.
As for marketing success - it depends on your creativity.
Thanks for the reply , what exactly do you mean by creativity in a unit converter app? I mean how creative can a unit converter app be?
Well...there's dozens (hundreds?) already out there, for every platform. To market yours and get more than 3 downloads, it would have to be distinctly different than all the others.
As a training application, sure.