Pretty good utility app! More features please!

Good useful utility app! Already used it to isolate some frequency noise in my home and external sources that were interfering with other sensitive equipment. Have used it as a heart monitor. This app is really good, needs a bit more, please.

What I would like to see is the following:

1. Increase frequency spectrum sensitivity to 32 kHz
2. Ability to save recording to a file on iphone
3. Variable speed playback
4. Provide user choice of variable recording time up to 30 seconds

Thanks ...

cosmic starman about iAnalyzer Lite