The State of eCommerce for Marketers – 2026 Edition

The State of eCommerce for Marketers - 2026 Edition
01 KEY findings
57%
YoY drop in US iOS UA spend in Q4 as China-based advertisers cooled down and India claimed Android dominance
India-based brands overtook China as the top source of Android UA spend, though their growth reflects domestic demand, not international expansion. China-based apps redirected budgets, growing iOS remarketing share by 16% as their UA share fell 28%.
92%
of all iOS ad spend now goes to remarketing as re-engagement budgets surged across nearly every market
iOS remarketing share climbed from 77% to 92% in one year. The Q4 surge was broad-based: 12 of 13 markets grew iOS remarketing. On Android, remarketing climbed to 85%. The US grew iOS remarketing 58% Q1-on-Q1 while Android declined, suggesting advertisers are actively shifting re-engagement budgets toward iOS.
43%
of AI assistant attribution-related questions stem remarketing mechanics and iOS privacy
Remarketing and re-engagement attribution accounts for 27% of all attribution queries in AppsFlyer’s AI assistant: the single largest subtopic. SKAN and iOS privacy adds 16%. Campaign-level queries dominate at 64% of funnel-relevant questions while retention accounts for just 9%, suggesting daily optimization takes priority over longer-term engagement analysis.

231% remarketing conversion uplift on US Android, as the activity lifts Android purchase rates 50% more than iOS globally

Remarketing lifts Android install-to-purchase conversion 177% globally versus 118% on iOS. Brazil shows the widest gap: 211% Android versus 69% iOS. iOS users self-select as higher-intent buyers, so remarketing adds less incremental lift. Android pools are larger and more heterogeneous — more users need that additional touchpoint.

40% surge in Germany’s consumer spend share on Android as India loses ground despite leading install growth

Germany gained on both platforms (Android +40%, iOS +22%), becoming the most consistently improved consumer spend market. India tells the opposite story: despite leading install and remarketing conversion growth, consumer spend share dropped 14% on Android and 19% on iOS. Volume is not translating to value.

2x increase in iOS install fraud in France and the UK even as global fraud dropped 34%

France iOS fraud climbed from 11.8% to 23.0% with every quarter higher than the last. UK iOS went from 11.4% to 20.0%. The pattern suggests fraudsters are rotating toward high-CPI Western iOS markets where payoff per fraudulent install is larger. Agency fraud spiked to 41.2% in Q4, aligning with peak holiday UA season.
02 introduction

Re-engagement dominance hits a new peak as acquisition thins out

The eCommerce marketer’s playbook has run on the same assumption for years: growth means new users. Spend more on acquisition, widen the top of the funnel, convert a percentage into buyers, repeat. That model is changing.

Across the markets and platforms analyzed in this report, the top of the funnel is narrowing. Paid installs are declining broadly, not because demand for eCommerce apps is weakening, but because the cost and complexity of acquiring new users has risen past the point where acquisition-first strategies deliver consistent returns. Competitive saturation in mature markets makes every incremental install more expensive. And geopolitical disruption, most notably the tariff-driven impact on China-based advertisers’ activity in the US, reshuffled billions in ad spend across regions in ways that no annual plan anticipated.

The market’s response has been decisive and nearly universal: shift spend from finding new users to re-engaging existing ones. Remarketing now dominates eCommerce ad budgets on both platforms by a wide margin, and the conversion data validates the bet. In market after market, re-engagement campaigns are delivering value. This transition appears structural, not a temporary reaction to a difficult year.

That shift creates new questions. If the growth engine now depends on extracting more value from existing user bases, which markets are converting engagement into revenue, and which are generating volume without commercial return? The answer varies heavily by geography and platform, and the gap between install growth and consumer spend is one of the most important dynamics in this dataset.

Meanwhile, the infrastructure underneath is under pressure. Fraud is migrating toward the highest-value traffic. Attribution complexity is growing as re-engagement mechanics create new measurement friction. AI-powered analytics are embedded in the daily workflow, but most teams are using them to retrieve answers rather than diagnose problems. For marketers planning the 2026 holiday season, that gap matters: a re-engagement-led strategy is only as good as the decisions behind it.

This report covers October 2024 through March 2026, analyzing ad spend, conversion trends, consumer revenue, buyer behavior, web-to-app patterns, fraud, and AI analytics usage across 13+ markets on both major mobile platforms.



Data sample *
35B
Marketing conversions including 29 billion remarketing conversions and 6 billion paid installs from Oct. 2024 to March 2026 (inclusive).
1,800
eCommerce apps (excluding marketplace and groceries) with at least 3,000 installs per month per country
$5.5B
Ad spend by eCommerce apps covering user acquisition and remarketing from Oct. 2024 to March 2026 (inclusive).

“The journey from discovery to purchase to loyalty is centered on the best surface to move a consumer forward, given the signals available. That means using channels like CTV, social, and creator content to generate demand, with clear and seamless paths into web or app.”

Ed Dinitech
Chief Customer Officer
03 Top trends

User acquisition ad spend trend (normalized)

UA ad spend split by platform

UA ad spend split among top markets

UA ad spend split by country headquarters


Remarketing ad spend trend (normalized)

Remarketing ad spend split by platform

Remarketing ad spend split among top markets

Remarketing ad spend split by country headquarters


Share of ad spend by marketing activity


Year-over-year % change in conversions (Oct 25-Mar 26 vs. Oct 24-Mar 25)


Share of in-app purchase revenue by country


Share of buyers by type *


AI Assistant questions split by type among eCommerce marketers *


Web-to-app installs trend by platform (normalized)


Remarketing uplift in the install to purchase conversion rate *


App install fraud rate by platform

App install fraud rate by media type

04 Experts’ corner
05 key takeaways
Skip numbered cards section
Shift budgets toward re-engagement for Q4
Shift budgets toward re-engagement for Q4

Remarketing now accounts for the vast majority of eCommerce ad spend on both platforms, and conversion data validates the shift. In markets where paid installs declined on iOS, remarketing conversions grew without exception. For holiday planning, the signal is clear: explore shifting more budget toward re-engaging existing users rather than fighting for increasingly expensive new installs, especially on iOS where acquisition costs continue to rise.

Test Android remarketing where the conversion gap is widest
Test Android remarketing where the conversion gap is widest

Remarketing lifts Android purchase conversion rates significantly more than iOS across most markets, because Android user pools are larger and more heterogeneous. Markets like Brazil, South Korea, and the US show the widest platform divergence. Explore increased Android remarketing investment in markets where your iOS re-engagement is already mature — the incremental return on Android is likely higher than pushing iOS further.

Audit fraud exposure before scaling holiday spend
Audit fraud exposure before scaling holiday spend

iOS install fraud is rising sharply in Western European markets even as global fraud declines. Agency-sourced traffic spiked during the last holiday season, when advertisers onboard new networks with less history and looser controls. Review traffic quality by source and market before scaling Q4 budgets, and consider tightening validation on affiliate and agency channels during peak spend periods.

Separate install volume from revenue value
Separate install volume from revenue value

Install growth and consumer spend growth are diverging across key markets. Some of the fastest-growing markets on installs and conversions are losing consumer spend share, while others with modest acquisition metrics are gaining disproportionate revenue. Evaluate market potential using consumer spend trajectory alongside install volume to avoid over-investing in markets that deliver users but not buyers.

Push AI analytics beyond reporting into diagnosis
Push AI analytics beyond reporting into diagnosis

Most eCommerce teams use AI-powered analytics for quick-answer retrieval and single-metric lookups. Strategic queries involving anomaly detection, causal analysis, and multi-variable breakdowns represent a fraction of usage. Explore building workflows that prompt AI tools with layered, diagnostic questions rather than simple data pulls — especially during Q4 when the speed of identifying performance shifts determines outcomes.

About the authors

Shani Rosenfelder

Director of Global Content Strategy & Market Insights at AppsFlyer

Shani is the Director of Global Content Strategy & Market Insights at AppsFlyer. He has over 10 years of experience in key content and marketing roles across a variety of leading tech companies and startups. Combining creativity, analytical prowess and a strategic mindset, Shani is passionate about building a brand’s reputation and visibility through innovative, content-driven projects.

Yuval Hay Hirsh

Data Analyst

Yuval Hay is an Industry Data Analyst at AppsFlyer, with 4 years of experience specializing in marketing data exploration and research. Passionate about uncovering insights and identifying new data opportunities, Yuval Hay helps drive strategic decision-making through deep data analysis and exploration.

Ready to start making good data driven choices?