Retro Sound Studio (App Store link) is a free synthesiser application for the iPad that is aimed at creating retro electronic sounds reminiscent of 80?s arcade games.
It is intended to be used by game developers to create sounds for their games or by music producers as a sample source, particularly for producers working in dance music genres such as tech house and electro.
Saved sounds can be accessed by using iTunes.
Select the device, then go to the Apps tab and finally select Retro Sound Studio under File Sharing.
If you give Retro Sound Studio a try, leave comment and share you thoughts on it!