Similar Apps to Garage Band that Support Piano keyboard input Directly on IOS

I have a Yamaha piane keyboard with a Usb port. I have the camera kit adapter and can connect my keyboard to my phone and IPod touch with no problems. I have tried garage band for IOS to get the audio from my keyboard to come directly into my IOS device with no success. I have found garage band to be not very user friendly with voice over on IOS. I like that garage band has different piano and keyboard sounds that can be used with an external piano keyboard. If anyone knows of any similar apps that offer the same features pliffe share them. I would also like to be able to share my recordings with anyone using regular file formats. I would appreciate any suggesttions fols have. Thank you.