Onboarding Mobile App Checklist

Define a single activation milestone.
Map onboarding events and expected completion rates.
Track source and locale segments for leak discovery.
Run one high-impact change per iteration cycle.

Before implementation

Write one sentence describing the value a successful new user reaches.
Remove steps that serve the company but do not help the user reach that value.
Ask for permissions only when their purpose is visible and provide a path after denial.
Define analytics events, parameters, consent behavior, and test cases with engineering.

Before release

Complete the flow on a clean install, upgrade, slow network, and supported device sizes.
Verify every event in GA4 debug tooling and ensure steps are not double-counted.
Review accessibility, localization expansion, error recovery, and account-deletion paths.
Record the release version, rollout date, audience, hypothesis, primary metric, and guardrails.

After release

Compare equivalent cohorts and windows, check instrumentation first, and inspect the absolute number of affected users as well as rates. Segment only where there is enough data to make the comparison useful. A drop-off report suggests where to investigate; it does not prove why users left.