Wobblr was the first big iOS project I worked on back in 2011, when skeumorphic materials and missing vowels/a trailing “r” were essentially required to get onto the App Store.
It wrapped a long lost open-source synthesizer library, which was highly configured to produce a certain sound. By only exposing a few basic parameters to the user, It was effectively impossible to produce something which didn’t sound good.
In mid-2016, Apple yanked it the App Store since it hasn’t been updated since iOS6. I’d love to get it back up, but the source code is long gone on an old computer!