Organic Uplift refers to the extra organic installs an app gains as an indirect result of paid acquisition, often called the halo effect, estimated through experiments rather than read from any store report.
The mechanism runs through the stores' own signals. Paid campaigns raise install velocity, which can lift keyword and category rankings; higher rankings bring more organic impressions and installs, and some people who see an ad later search for the app by name instead of tapping it. None of this is labeled in store analytics. App Store Connect's App Store search source type includes downloads from search ads, and Play Console folds Google Ads visits into its ads and referrals traffic source, so uplift has to be inferred by comparing what happened with a credible baseline.
Teams estimate it in three common ways: geo holdouts, where comparable countries run with and without spend; on/off tests, pausing a channel for a set period and watching organic installs; and pre/post comparisons around a campaign launch, the weakest because seasonality, featuring and releases muddy the result. Whatever the method, the output is an estimate with a margin of error, not a guaranteed multiplier, and it varies by channel, category and brand strength. Budget models that plug in a fixed halo can overstate paid returns, so measure it and revisit it.
Example
A meditation app pauses Apple Ads in two comparable European storefronts for four weeks while keeping spend elsewhere. Comparing organic installs in the paused markets against the control group gives the team a rough, market-specific uplift estimate to use in its bidding model instead of a borrowed rule of thumb.