Best audio editor that Ive found for IOS

I produce a short (330") weekly radio spot in Southeast Asia for broadcast in Texas and midWest. This is the best IOS app Ive found for my purposes.
Change speed, keep pitch the same, is a great unnoticeable cheater for making a piece fit the time constraints. Very simple and straightforward FTP upload. Dropbox integration. Email file from within app. Various formats including mp3.
These are all capabilities rolled into this little app that are not all there in the competition.
The minimal unlock fee for all this is, in my opinion, a bargain.
Highly recommended!

R in Saigon about TwistedWave Audio Editor