The latest version of the NCID Android app has been released into the Play store.
This version has changes to satisfy requirements from the Play store, by removing the Background Location feature which is a potential privacy issue. There are also some bug fixes, such as the one that causes multiple notifications for the same outgoing text message.
This release supports Android 4.2 to Android 11. For older devices, and to get the Call/SMS add-on, see the NCID Sourceforge repository.