Android App to take picture and store them on the Phone then Share

Summary: I would like a very simple Android App that takes a picture using camera and automatically prompt you for a category to save it into on the phone. Detailed Step: - Apps open into Camera with simple button to take a snapshot - Once photo taken it will preview and user can Rotate Image, Crop, change name and then hit Save - Once pressed Save, the App will prompt list of folders or categories to save into that are (organized alphabetically) specific to the APP obtained and saved in (/DCIM/THScanner) - Once saved, the app asks if you want to view categories or go to Camera - There is a little Menu consisting of: - Manage Categories (Add,Edit,, View,Delete, Share) , - Credits, - Exit - User should be able to add subcategories that will display when a user select to save into a category that has sub categories. - Sharing should allow user to select multiple image files to share. In the Categories section, user can decide to Security: - App must adhere to Android security and should not transmit any data or access any part of the phone not necessary for it to operate. Performance: - I am looking for fast performance with low memory footprint and resource requirement. App must be signed APK by release keystone so I can publish it on App Store. It might be easier to integrate an open-source file explorer that points to the App default folder in the Categories Management section. All source, images must not infringe on any copyrights and be of good quality. As part of the credits, your name will be published. I do not intend to sell this, it will be open-source. Important: The app must be really simple with code future and backward compatible. Avoid any code or functions that are not stable or may be phased out. Further, your name will be added to the credits as a contributor.