Hi Eric, thanks for your answer.
Well, indeed, it seems the "Launches" metrics is directly linked to the Lifecycle hit...
Your example of segment is exactly what I did to check:
- one segment "Visits with pageview" set as a "visit" container with pageview metrics "exists".
- one segment "Visits without pageview" rthat"s exaclty the same one but in exclusion.
I do also have some errors counting in custom links (so that can provide visit no page view), but very few compared to the total volume of visits with no pageview.
So I guess the explanation of "people opening the app (maybe by mistake ; or clicking on a link opening the app...) and closing it right away before to have any real page view" is still the good one?
I'm just amazed by the number of time it happens! I have no idea if it's above or under average for an app...
And to conclude, what I understand is that there's no "best practice". On one hand it's interesting to have this figure (to monitor it and make sure it's not increasing too much), but on the other hand it's also interesting to exclude those cases to have a "useful" traffic on which calculate a proper conversion rate.