If there is interest I would seriously develop such an Application.
My idea is to have a representation of the MicroBrute (Applicable to other Synths) from which you can read presets. Each user logs in with his google Profile or such and is able to add presets with tags (Pad, bass, lead, etc...). Maybe also a sound sample and a description.
There would be a private preset storage and a public one. This way you can not only store your own presets but also use other's presets and choose which of yours to be published for other users!
I am experienced in Android, web and desktop programming (QT Framework) and am willing to learn iOS for this purpose. Any developer that wants to join this project is welcomed to contact me!
Tell me your opinion on that and if anyone wants to help, simply message me!