Write an Android application for Voice Changer app

Hi. I want to make a fun app, Voice Changer. There should be proper modulations of voices as its name. I do not want to use any free code or any other useless codes to make this app. so please bid only if you are able to make this app. Here are few ref apps: [login to view URL] [login to view URL] INCLUDES FOLLOWING EFFECTS: • Normal • Helium • Hexafluoride • Robot • Big robot • Cave • Space mutant • Deep voice • Backwards • Monster • Small creature • Optimus Robot • Telephone • Dragon • Nervous • Extraterrestrial • Cathedral • Cyborg • Singing chipmunks • Android • Drunk • Giant • Squirrel • Dark side • Grand Canyon • Fly • Zombie • Child • Underwater • Duck • Evil puppet • Battery low • Shrinking • Devil • Megaphone • Fan • Ghost • Alien • Small alien • Villain • Sheep • Death • Everything is spinning • Overlord • Poltergeist FEATURES: ✓ Share (whatsapp, e-mail, dropbox, etc...) ✓ Save recording ✓ Piano ✓ Create image with sound. You can share it on Facebook ✓ Import pre-recorded sound ✓ Create voice from text ✓ Set as ringtone ✓ Set as notification sound