Ringtones suck. Not in theory but in practice. They exist for one reason and that is to notify; this however, doesn't stop everyone and their grandma from using screechy loops of "Ice Cream Paint-Job" instead. Enter Cleartones by Hugo Verweij.
Verweij makes his living as a sound engineer so you can imagine how much it hurts him to hear your average teen's ringtone. These "hand-made, minimalist ringtones for the serious user" consist of short, clean bursts of unobtrusive sound designed specially for the iPhone's speakers. In his own words:
