Welcome to Indie App Spotlight. This is a weekly 9to5Mac series where we showcase the latest apps in the indie app world. If you’re a developer and would like your app featured, get in contact. --- Everyone, at least in the United States, likely feels a need to improve their fitness and health – but doesn’t quite know how to. Or, if they have, they end up losing motivation and then give up because they don’t want to feel bad. I’m sure we’ve all heard the stat that most New Years...