Install attribution

Install attribution is the process of determining which marketing touchpoint, such as an ad click, a referral, or an organic store search, caused a given app install, so that spend and results can be tied to a specific channel or campaign. This is harder on mobile than on the web, because there's no shared cookie between the ad click and the app itself; the two events happen in different, sandboxed environments.

On Android, attribution has generally relied on passing a referrer parameter through the app store to the newly installed app. On iOS, device-level matching has become increasingly restricted, pushing attribution toward Apple's aggregated SKAdNetwork framework, which reports campaign-level conversion data without linking to an individual device. Most apps rely on a mobile measurement partner to implement these mechanisms consistently across networks and platforms rather than integrating each one separately.

Install attribution matters because marketing budgets are allocated based on which channels are believed to produce installs and, ideally, valuable users — not just any install. The central pitfall is attribution model choice: a last-click model can over-credit the channel a user interacted with right before installing (often a channel like search) while under-crediting earlier channels, such as video or display, that built awareness earlier in the journey. Fraud, such as click flooding or install farms, is another persistent risk that inflates attributed installs without real users behind them.