Argo Social Album needs a new icon or button design

Argo Social Album

We are developing an iPhone app that allows our users to create group albums and invite their friends. All album contributors can take/upload the mobile pictures directly into a single shared album that can be posted to Facebook. So the next time a group of friends hits the town, all their photos will be in a single album online - a night they won't forget with the photos to prove it!

We need an iPhone app icon. We would prefer not to have text in our icon. We have not yet settled on a definite color scheme but have been leaning towards a dark blue/light blue or dark blue/gray in our app concept art. Feel free to explore other options. We do, however, expect this to be a more useful/utilitarian style app.

Please also ensure that there is nothing pertinent to the design in the corners as Apple will adjust the image to round the corners. We also prefer icons that don't have borders or already rounded corners.

Multiple formats is preferred, as are vector formats. Please make the designs 2048x2048. We are developing the app for iOS6, so please take that into account when creating your designs.

As a final note, we plan to develop other apps under our company name: Argo (the name of the ship that Jason and the Argonauts sailed). So, something in the icon that can either be directly replicated or easily incorporated into the design for other icons later would be appreciated.

If you have any questions or want clarifications, feel free to leave a comment so we can discuss them with you.

Thanks!