This app doesn't collect any data identifying you as an individual. Nobody but you ever gets access to the data you store using the app. We use Google Analytics to improve the app, details see below.
Read/modify/delete contents on your SD card This permission is required for the automatic data backup and for the manual data import and export.
In-App purchases: We offer add-ons that allow you to extend the app from a pure breastfeeding tracker to a complete baby tracker.
android.permission.MANAGE_ACCOUNTS, android.permission.GET_ACCOUNTS, android.permission.WRITE_CONTACTS, android.permission.READ_CONTACTS, android.permission.USE_CREDENTIALS, ACCESS_NETWORK_STATE
Identity: add or remove accounts, find and use accounts on the device, read/modify contacts, view network connections: These permissions enable the synchronization between mobile devices through your Google Drive account (optional add-on).
Full network access is necessary for...
Run at startup enables the use of status bar widgets and the automatic backup onto your mobile's SD card.
This app stores the data you entered in the following ways:
The automatic backups and the app's database are stored on your SD card. Upon uninstallation the database gets deleted, the automatic backups still persist (in the folder Nursing on your mobile's SD card).
If you use the synchronization then your data gets stored in your Google Drive Account. The data there is private and will not be deleted by uninstalling the app.
Google Analytics: Anonymous usage data is stored at Google Inc. Here the more elaborate explanation by Google:
Google Analytics data privacy and security