Does this sound like trouble

I just downloaded an Ipad app; Songcatcher -- corecloud.com/express. The spec sounded good, it is made in Sweden. It is a free App. You can sing or hum a single line into the Ipad and it write a single line score. I have some church friends who have put their songs together in their heads; they want me to place it on paper. Chords needed are not a problem.
Question:

I opened the program in my Ipad and it asked for me to sign in. BUT it asked me for my I.D. number I use with Itunes. I use this number to purchase.

DOES THIS SOUND LIKE AN AREA,APP I SHOULD AVOID?

Thanks you,
John C.

http://www.hitsquad.com/news2/SongCatcher-Audio-MIDI-Recording-Editing-iPhone-App/

Are we saying that your singing or melody instrument makes a Midi File in the App and that Midi File can be turned into a written score?

If so, can this be done with the Garage Band app for Ipad?

One of the amazing things about this Synthzone is that you ask for help and receive it within a very short time. There’s no better place.

Thanks for your help, John C.