Kalshi: Trade the World Cup holds the number-one US iPhone free slot because the prediction market rebranded around FIFA World Cup 2026 and captured roughly 42% of new sportsbook and prediction-market installs in early June, per Apptopia. This is the first App Store Top Free daily roundup in the archive, and the chart looks nothing like the May 10 paid list that Shadowrocket and specialist utilities led.
Top trending apps on App Store Top Free — June 26
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Kalshi: Trade the World Cup — A CFTC-regulated prediction market for trading event contracts. Kalshi rebranded to "Trade the Cup" before the June 11 World Cup kickoff and has held the US #1 free slot through late June; Apptopia reported daily-active-user records on June 14 and 15.
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ChatGPT — OpenAI's mobile AI assistant. Sensor Tower's June 16 State of AI report said ChatGPT became the fastest app ever to reach one billion monthly active users in May 2026, keeping it in the top free tier as rivals gain share.
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FOX One: Live News, Sports, TV — Fox Corporation's streaming hub for sports and news. Apple promoted World Cup coverage on FOX One ahead of the tournament, and the app hit #1 on the US free chart on June 14 as English-language matches drove install spikes.
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Peacock TV: Stream TV & Movies — NBCUniversal's streamer and the Spanish-language World Cup home in the US. Sensor Tower data cited by Cord Cutters News showed Peacock downloads up 35% when the tournament opened June 11.
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TikTok Pro - Events — A standalone TikTok US app for cultural moments, launched June 3, 2026 with the World Cup as its pilot. Users earn Stars through fan challenges redeemable for FIFA merchandise or charity donations.
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Vinted: Pre-loved marketplace — A secondhand fashion marketplace. No widely reported trigger identified for June 26, 2026.
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Love Island USA — Peacock's voting and companion app for Season 8, which premiered June 2, 2026. Nightly episodes and active voting windows keep install velocity high.
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Polymarket — A CFTC-regulated prediction market for sports, politics, and news. Apptopia attributed 31.2% of major betting-app installs in early June to Polymarket, with daily-active-user records June 13 through 15.
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Claude by Anthropic — Anthropic's AI assistant app. Claude sits in the US overall top 10 in mid-June as AI assistants fill multiple free-chart slots.
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Threads — Meta's text-based social network. Meta announced 500 million monthly active users on June 16, 2026 alongside new feed personalization features.
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Google Gemini — Google's AI assistant, refreshed after Google I/O 2026 with Gemini Spark and Daily Brief. Sundar Pichai said the Gemini app passed 900 million monthly actives at I/O.
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Google — Google's search app with AI Overviews and Lens. The utilities leader rides the same AI-search momentum lifting Gemini; version 424.4 shipped June 10.
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WhatsApp Messenger — Meta's encrypted messaging app. Version 26.24.73 shipped this week with group-call transfer between mobile and desktop.
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My Earthquake Alerts & Feed — A free earthquake alert app using USGS and EMSC data. A magnitude 5.8 quake struck near Yokoshiba, Japan, on June 26, 2026 at 12:46 p.m. local time, likely driving fresh installs.
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CapCut: Photo & Video Editor — ByteDance's TikTok-linked video editor. CapCut remains #1 in US Photo & Video free charts in mid-June as short-form creators edit World Cup and event clips.
The full list of 50 trending apps is available via the Trends MCP API. Get your free API key →
What today's App Store trends reveal
World Cup 2026, prediction markets, and AI assistants split today's free chart. Streaming and event apps (FOX One, Peacock, TikTok Pro Events, Love Island USA) trace to June broadcasts and fan engagement. Kalshi and Polymarket together captured roughly three-quarters of new betting and prediction-market installs in the first half of June, a break from traditional sportsbooks that usually lead summer charts.
Compared with the May 10 App Store Top Paid roundup, where proxy utilities and creative tools dominated, today's free list is almost entirely event-driven. Apptopia tied the prediction-market surge to World Cup kickoff on June 11; TikTok Pro Events launched June 3 and Love Island USA opened June 2. ChatGPT, Claude, Gemini, and Google look more like recurring fixtures than one-day spikes. My Earthquake Alerts at #14 is the clearest non-sports one-day trigger after the June 26 Japan quake.
Track these trends in real time with Trends MCP
This list comes from a June 26, 2026 Trends MCP API snapshot of App Store Top Free ranks in the United States. Product teams and analysts use the same endpoint to monitor daily chart shifts without manual scraping. See the App Store trends data source page for field definitions.
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