Paid UA: How to Acquire Users Without Overspending
Cost per install (CPI) alone is a misleading metric: a low CPI with users who churn immediately often costs more overall than a higher CPI with strong retention. Paid UA should launch only after ASO groundwork is in place, so spend isn't masking a fixable listing problem.
How to spend paid UA budget wisely
- Fix ASO first, so paid traffic lands on an optimised, converting listing
- Track install-to-retention, not just CPI, when judging campaign performance
- Test creative on a small budget before scaling spend into it
Cost per install is the wrong target
Cheap installs are easy to buy. The question is what those users are worth. A campaign with a low cost per install and users who churn in a day costs more per retained user than a campaign with higher CPI and loyal users. Set targets on cost per retained or paying user instead.
What changed in app measurement
Apple's App Tracking Transparency, introduced in 2021, made user-level tracking on iOS much harder; Meta estimated it would cost the company $10 billion in 2022 (CNBC, Feb 2022). App marketers now rely on SKAdNetwork, aggregated measurement and their own analytics. Incrementality tests, where you turn spend off in one region or audience and compare, are one of the best ways to know what paid actually adds.
How to spend carefully
- Fix the listing first: Apple says around 70% of App Store visitors search and nearly 65% of downloads follow a search (Apple Ads); a stronger listing makes every paid click cheaper
- Start with search intent: Apple Search Ads and Google App campaigns targeting category terms usually bring better users than broad social
- Test creative weekly: in most categories, creative fatigues within a few weeks
- Judge by cohort: day-7 and day-30 retention and revenue by campaign, not installs
- Cap spend while learning: scale only when cohort economics are proven
Watch for install fraud and incentivised installs. They look cheap and never retain. Use your attribution provider's fraud tools and check suspicious sources.
What to do this week
Calculate cost per user who is still active on day 30 for each campaign. Pause the worst performer and move its budget to the best. See app marketing and why installs without retention are a trap.