What is your average interval?
Paste the dates you did something. This is the arithmetic TimeSince runs continuously, shown once.
Paste at least two dates. Everything stays in your browser.
Where this runs
Entirely in your browser. The dates you type are never sent anywhere, there is no request behind the answer, and nothing is stored when you close the tab. The same is true of TimeSince itself, which keeps your counters encrypted on your phone with no server in the middle.
Let it keep count for you
TimeSince runs this arithmetic continuously, for everything you track. Free for three counters.
