How to present days since last session and session count?

[wdwatkins]

These are both GA dimensions, and so are provided as sessions (metric) with X session count or days since last session. Options include a histogram for a given time period (day/week/year), or alternatively we could present a daily mean weighted by number of sessions. In theory trends in these could be useful, but some exploratory analysis is needed first.

Hard to say what the distribution will look like for different apps, so using a particular mean/median statistic could be dicey. A histogram is probably a better starting point.

[wdwatkins]

Interpretation of these is rather tricky also, so some explanatory text would definitely be in order.