Very buggy and inconsistent

Feature and price wise its not a bad app but theres a LOT of room for improvement. I installed this on a iPhone 4 iOS5.11 and it wouldnt send emails (somehow the email button sent through FTP while the FTP button wouldnt work). Then as a test
Ive installed it within minutes on a iPhone 5 iOS7 and it would constantly crash but would send emails. !?!?

Mozbius about WavePad Music and Audio Editor, v4.56