What makes an app install source worth testing?
The source should reach compatible device users and provide placement data that can be linked to activation, retention or another accepted app event.
How should a first install-source campaign be configured?
Use one clear audience hypothesis, tested store links, source parameters, a budget cap and a post-install event that is working before launch.
Why can a cheap install produce expensive users?
Low-cost installs may leave quickly, fail to activate or require incentives that do not create useful product value. Judge acquisition cost against mature activation and retention, not installation volume alone.
Which cohort evidence should follow install reporting?
Compare activation and retained use by source, creative, market and operating system under the same event definitions. Wait for the selected outcome to mature before judging source differences.
What pattern can indicate invalid install traffic?
Investigate impossible timing, repeated identifiers, installs without matching store records and cohorts with no credible in-app activity. Verify source behaviour and reporting identifiers before treating an unusual cohort as invalid.
How do incentivized installs differ from intent-led installs?
An incentive pays or rewards the install action, while intent-led users choose the app for its product promise; later behavior can differ sharply.
Which attribution check belongs before paid installs start?
Send a known test through the tracking path and confirm source, install and accepted post-install events appear once in each expected system.
When should an install source be paused immediately?
Pause when attribution cannot be trusted, delivery violates the campaign rules or verified cohort value falls beyond the source stop condition.
What supports increasing an app install budget?
Raise spend gradually only when a fresh install cohort shows comparable retention and its acquisition cost stays within the app's value model.
What belongs in an install-source test log?
Keep settings, bids, creative, store version, cohort dates, event rules, spend, excluded placements and the final decision. Preserve campaign and placement identifiers, plus the reason for each material change.