Pretty good, also had a similar idea but your implementation is better!
Feedback:
Perhaps add icons to the menu section (I'm aware this is the same menu as the one drive app, just want to see how it looks for comparison
) and utilise the space on the right a tad more if possible?
In the about screen the links are some what congested, they would need spreading out so you could increase the font size a tad bit so it is easier to read and tap otherwise I can see some people tapping two links at the same time.
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In the account screen, move the +add account a few pixels to the bottom and increase the font size a little.