The life clock - Memento Mori for Android
By being conscious of the time we have left, perhaps something may change.
This app makes it possible to input two separate dates.
"A beginning"… All years that have taken place are displayed as "up to the present." If you enter your birthdate it will be displayed as your age.
"An ending"… The time you have "left" until this ending can be displayed in one of 2 ways, either as days remaining, or as year/month/date.
You are free to choose the dates. It could be a birthday, a job resignation, retirement, graduation, etc.
At the bottom is a notes section to enter whatever you like.
If you press the return button, the app will close and your contents will be saved.