Did the release help? Before and after, measured.

Every version gets its own page: the share of sessions running it, what the app looked like in the days before and after, its TestFlight numbers and Apple’s performance metrics.

Start for free Read the docs

The problem. Sound familiar?

Release notes in one tool, crashes in another, usage in a third, and no day that lines them up.
A “retention went down” that turns out to be a smaller share of users on the new version.
A phased release you cannot see progressing.

Where Union answers it.

01
Adoption
The version’s share of daily sessions, measured from your own users rather than Apple’s rollout schedule.
02
Before and after
Sessions, active users, events per session, first opens and feature adoption per day, the week before against the week after.
03
Crashes per release
A crash-free rate that says “at most” until late reports have arrived, so a fresh release never looks perfect by accident.

In the docs: Upload dSYMs

Questions.

Does Union say the release caused the change?

No. The comparison includes every version active in the window, seasonality and marketing. Union shows the difference and labels it a correlation.

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