#simplex experience on Android is 4.5/5 stars. There's some rough edges, which I totally expect from a small team building something totally different, but overall its a pretty damned good tool.
My iOS friends seem to disagree with me. Is there a big difference between the AppStore and Testflight versions of Simplex? Or is there just less focus on iOS user experience? Or are my iOS friends just retarded? (That last one's a joke. They're pretty smart dudes.)