What Is User Acquisition? Definition, Examples & How It Works
A plain definition of user acquisition, how it works, the main channels, and the metrics that decide whether it’s profitable.
Key takeaways
- User acquisition (UA) is getting the right new users to a product profitably.
- For apps it’s mostly paid media (ASA, Google UAC, Meta, TikTok) plus organic and ASO.
- Success is measured on CAC, LTV, ROAS and payback, not installs.
User acquisition, usually shortened to UA, is the practice of bringing new users to a product at a cost the value of those users justifies. For mobile apps it means buying installs and, more importantly, paying subscribers, through a mix of paid and organic channels.
How user acquisition works
You run campaigns across channels, each user costs money to acquire (CAC), and each user returns value over time (LTV). UA is profitable when LTV comfortably exceeds CAC and you recover that cost inside an acceptable payback window. The whole discipline is managing that gap as you scale.
The main channels
- Apple Search Ads: high-intent iOS App Store search.
- Google App Campaigns (UAC): machine-led scale across Google’s network.
- Meta and TikTok: paid social, creative-led scale.
- ASO and organic: store optimization and unpaid discovery.
Examples of user acquisition
Running TikTok video ads to drive subscription trials. Bidding on App Store search keywords with Apple Search Ads. Building a Web2App funnel and buying traffic to the web paywall. Optimizing your store listing so more visitors install. All of these are UA.
The metrics that matter
Installs and CPI are traffic metrics. The ones that decide profit are CAC (cost per paying user), LTV (net lifetime value), ROAS (return on ad spend) and payback (months to recover CAC). Healthy subscription apps target LTV:CAC of 3:1 or better and payback under 12 months.
Want the deeper version? Read the full 2026 UA playbook.
Read the playbook