A free program for Android, by Dean Keith.
The app contains a number of tools to track the time that has passed since a certain event, and to visualize this in a simple way. For example, you can create a donut for every day that your loved one is gone, and for every day that has passed since the last time they were gone.
You can also use it to keep track of the time that your loved one is away, and to know when they are going to be back. And if you want to do more than one donut, you can create as many as you want, and save them for recall later.
The app contains a lot of useful tools, such as a calendar for making a list of all the events that you want to know the time of.
