ChatGPT's overwhelming 91.5% implied probability as the top free app in the US Apple App Store on March 24 stems from its viral surge following OpenAI's advanced voice mode rollout, which boosted daily downloads to millions and vaulted it past competitors per real-time Sensor Tower rankings. This momentum, amplified by AI hype and seamless mobile integration, has traders betting on sustained dominance amid March Madness distractions. Supporting factors include consistent top-grossing performance and user retention from multimodal features, but realistic challenges could arise from a torrent of basketball app installs—like CBS Sports or ESPN—if Sweet 16 viewership spikes drive frantic last-minute downloads, though current velocity strongly favors ChatGPT.
Experimental AI-generated summary referencing Polymarket data · UpdatedChatGPT 92%
CBS Sports App: Scores & News 3.4%
Google Gemini 2.2%
Freecash - Get Paid Real Money 2.1%
$13,682 Vol.
$13,682 Vol.

ChatGPT
92%

CBS Sports App: Scores & News
3%

Google Gemini
2%

Freecash - Get Paid Real Money
2%

ESPN Tournament Challenge
1%

NCAA March Madness Live
1%

Claude by Anthropic
<1%

Temu: Shop Like a Billionaire
<1%
ChatGPT 92%
CBS Sports App: Scores & News 3.4%
Google Gemini 2.2%
Freecash - Get Paid Real Money 2.1%
$13,682 Vol.
$13,682 Vol.

ChatGPT
92%

CBS Sports App: Scores & News
3%

Google Gemini
2%

Freecash - Get Paid Real Money
2%

ESPN Tournament Challenge
1%

NCAA March Madness Live
1%

Claude by Anthropic
<1%

Temu: Shop Like a Billionaire
<1%
To find the overall chart, click "Apps" at the bottom of the US iOS App Store app, scroll down to "Top Free Apps" and click "See All". Then under "Free Apps" in the "Top Charts" section, you'll see the list that will be used as the resolution source to this market (https://apps.apple.com/us/charts/iphone).
Market Opened: Mar 20, 2026, 1:10 PM ET
Resolver
0x69c47De9D...Resolver
0x69c47De9D...ChatGPT's overwhelming 91.5% implied probability as the top free app in the US Apple App Store on March 24 stems from its viral surge following OpenAI's advanced voice mode rollout, which boosted daily downloads to millions and vaulted it past competitors per real-time Sensor Tower rankings. This momentum, amplified by AI hype and seamless mobile integration, has traders betting on sustained dominance amid March Madness distractions. Supporting factors include consistent top-grossing performance and user retention from multimodal features, but realistic challenges could arise from a torrent of basketball app installs—like CBS Sports or ESPN—if Sweet 16 viewership spikes drive frantic last-minute downloads, though current velocity strongly favors ChatGPT.
Experimental AI-generated summary referencing Polymarket data · Updated


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