A navigation drawer, logo, search, settings (netflix type of navigation) and footer (optional) for all screens; consistent, simple color scheme and navigation.
Login screen: With G+, Facebook, twitter and yahoo login
Main screen: Display a grid of ImageViews showing the categories, Edit button at top right which leads to Configuration screen.
Fitbit kind of graph showing the following, category and amount for each category.
Click on a category should lead to another screen with detailed graph for a clicked category.
Ability to select 1h, 1d, 1m, 1y etc similar to Fitbit.
Configuration screen: Where the user can select, unselect categories.
Account Details screen
2-3: Help/ tutorial screens.