Days Until is an Android application developed by MindTheApps that helps users keep track of upcoming events and important dates. This lightweight and clean countdown timer displays the time left until a specified event, along with sending reminders.

Days Until has a variety of features, including persistent status bar entry support, photo support via gallery, camera, and sketches, and home screen shortcut for events. Additionally, users can share events, add them to Google Calendar, and use text-to-speech functionality. The app also offers backup and restore options for the entire database, search and sort functions, and widgets.

One unique feature is the ability to set repeating events on a daily, weekly, monthly, yearly, or custom schedule. Users can also check the calendar icon to see a list of historical events that occurred on that day. Furthermore, the app allows users to tag and group events for easy sorting.

It's important to note that the free version of Days Until is ad-supported, but a donate ad-free version is available. Overall, Days Until is a great app for anyone looking to keep track of important events and dates in a simple and organized manner.