My app Is SpeechStickers and is a practice app for non-verbal & minimally verbal kids (mostly with childhood apraxia of speech). Our first version has consonants /m,p,b/ and 5 basic vowels but we are about to put out an update with /t,d,k,g,s,sh,n/. I'm always thinking of great app ideas but since we are all "evening & weekend developers" (with real day jobs), nothing happens as fast as I want it to.