A user has requested a widget could be added to visualize a common marketing histogram called the Power Curve, popularized by Facebook.
Power Curve or L30 is described in many marketing blogs.
Examples here and here
A description from the second link, above:
the L30 is a histogram of users’ engagement by the total number of days they were active in a month, from 1 day out of the month to all 30 (or 28, or 31) days. While typically reflecting top-level activity like app opens or logins, it can be customized for whatever action you decide is important to measure for your product.
The Power User Curve has a number of advantages over DAU/MAU:
In other words, while the DAU/MAU gives you a single number, the Power User Curve gives entrepreneurs several avenues of analysis to assess their product’s engagement to the most addicted users — in a single snapshot, over time, and also in relation to monetization
An existing widget is pretty close, just is not a histogram. And is not exactly a Power Curve
This can be seen at Matomo > Behavior > Engagement > "Visits by Days Since Last Visit"