App Annie: there were 28.4B app downloads worldwide across iOS and Google Play in Q2, up 15% YoY as consumer spending grew 20% YoY reaching $18.5B
Context & Ripple Effects
App Annie's quarterly read on the two big stores has become the de facto scoreboard for the app economy, and this Q2 print extends an accelerating run: downloads grew just over 10% YoY to 27.5B in its Q1 2018 report, and now jump 15% to 28.4B. The spending line tells a subtler story — $18.5B is up 20% YoY, but that is a marked deceleration from the 35% growth App Annie measured when users spent $15B in Q2 2017.
The gap matters because the two stores are diverging underneath the aggregate: App Annie's earlier coverage flagged emerging markets driving Play Store download growth well ahead of iOS, so headline volume increasingly overstates where the money lands.
First-order effects
- Developers and publishers face a larger but less lucrative marginal user: the install base is growing faster than it did last quarter, while per-download spending power is thinning as growth skews toward lower-monetizing markets.
- Apple and Google both get a healthier top-line story for their stores — combined quarterly consumer spend crossing $18B — which strengthens their negotiating position with developers over revenue splits.
Second-order effects
- With Play Store volume outpacing iOS but the bulk of spend still concentrated on Apple's side, ad-supported monetization gets pushed harder on Android while subscription and in-app purchase strategies cluster around iOS.
- Rival measurement firms and store operators must respond to App Annie's quarterly cadence, since these numbers are what investors and press use to size the market each quarter.
Third-order effects
- If the pattern holds — double-digit spend growth compounding on an already large base, as later App Annie tallies of $120B annual spend in 2019 suggest it did — the app economy consolidates into a core consumer spending category that regulators and platform-policy fights can no longer treat as niche.
- The widening volume-versus-revenue split between Google Play and the App Store points toward a structural two-tier market: one store optimized for reach, the other for monetization.
The trend: The app economy is compounding steadily — downloads and consumer spend both growing double digits YoY quarter after quarter — while the mix shifts toward high-volume, lower-monetizing markets.