The race for the top spot on the US App Store for March 20 comes down to a classic battle between seasonal utility and everyday AI dominance. While AI tools have maintained a high baseline of downloads throughout the year, the specific timing of this window aligns perfectly with one of the largest annual surges in American sports media consumption.
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The March Madness Factor
The primary driver for app downloads in the third week of March is the NCAA Division I Men’s Basketball Tournament. For 2026, the schedule is already set: Selection Sunday falls on March 15, with the “First Four” games occurring on March 17-18. The first full round of the tournament begins on Thursday, March 19, and continues through Friday, March 20. Historically, the NCAA March Madness Live app sees a massive influx of new users during these 48 hours as fans download the platform to check brackets, receive live score alerts, and stream games during work or school hours.
Here is the thing: the App Store’s “Top Free” chart is heavily weighted toward “velocity”—the rate of new installs over a short period—rather than total active users. Because millions of fans realize they need the app exactly when the first round tips off, the download velocity for sports-related apps typically eclipses standard utility apps during this specific 72-hour window.
Why NCAA March Madness Live is the Frontrunner
The timing of the resolution—12:00 PM ET on Friday, March 20—is the “sweet spot” for sports viewership. This is the exact moment when the second day of the First Round is beginning. Fans who missed the Thursday games or realized their existing apps were outdated often rush to install the official NCAA app on Friday morning to catch the afternoon sessions. This creates a predictable, massive spike that usually pushes the app to the #1 or #2 spot overall, regardless of what AI or shopping apps are doing.
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The Competition: AI and E-commerce
What about the heavy hitters like ChatGPT, Google Gemini, or Temu? These apps have a much higher “steady-state” download rate. They are consistently in the top 10 because they are useful year-round. However, they lack a specific “event trigger” on March 20. Unless OpenAI or Google releases a major, viral update on that specific Friday, their download numbers will likely follow their standard daily patterns. Temu relies on aggressive ad spend to maintain its position, but even a massive marketing budget often struggles to compete with the organic, nationwide urgency of a live sporting event like the NCAA tournament.
What to Watch For
The main uncertainty lies in whether a non-sports app launches a viral campaign or a new feature that Friday. If ChatGPT or Gemini introduces a significant “Pro” feature or a new multimodal capability in the days leading up to the 20th, they could potentially hold their ground. Additionally, the CBS Sports app often climbs alongside the NCAA app, which could split the sports-hungry audience. However, the official NCAA app remains the primary destination for live streaming, giving it the edge in pure download volume.
Current observations show the NCAA March Madness Live app leading expectations with a 45% probability, followed by ChatGPT at 30.5% and Google Gemini at 22.9%. The liquidity remains highest for the AI candidates, but the momentum is clearly favoring the seasonal sports surge as the tournament start date approaches.
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