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Tech·App

#1 Free App in the US Apple App Store on September 18?

icon for #1 Free App in the US Apple App Store on September 18?
Tech·App

#1 Free App in the US Apple App Store on September 18?

Sep 18

Sep 18

ChatGPT 66%

Muse 10%

Vinted 10%

TikTok Pro - Events 7%

Polymarket
NEW

ChatGPT 66%

Muse 10%

Vinted 10%

TikTok Pro - Events 7%

Polymarket
NEW
icon for ChatGPT

ChatGPT

$1,165 Vol.

66%

icon for Muse

Muse

$95 Vol.

10%

icon for Vinted

Vinted

$233 Vol.

10%

icon for TikTok Pro - Events

TikTok Pro - Events

$86 Vol.

7%

icon for Google Maps

Google Maps

$151 Vol.

4%

icon for Google Gemini

Google Gemini

$146 Vol.

3%

This market will resolve according to the iOS app, ranked #1 in the United States on the iPhone Apple App Store's overall Top Charts under "Free Apps", as of 12:00 PM ET on the specified date. If the chart is unavailable at 12:00 PM ET, this market may remain open for up to 48 hours to allow for the data to become available. If the data remains unavailable, this market will resolve according to the last published ranking. 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).ChatGPT holds the strongest market-implied odds for topping the US free App Store chart on September 18 because it has maintained the #1 position through early September amid steady download velocity driven by ongoing large language model improvements and user retention in the productivity category. Recent Sensor Tower and Similarweb data show it ahead of Meta’s Muse, Vinted’s marketplace app, and Google Gemini, with no major new releases or regulatory events shifting momentum in the past week. Competing apps like TikTok Pro and Google Maps trail due to narrower daily spikes rather than consistent breadth. Traders appear to view the five-day window as too short for a sudden reversal absent an unexpected viral catalyst or platform-wide promotion.

This market will resolve according to the iOS app, ranked #1 in the United States on the iPhone Apple App Store's overall Top Charts under "Free Apps", as of 12:00 PM ET on the specified date.

If the chart is unavailable at 12:00 PM ET, this market may remain open for up to 48 hours to allow for the data to become available. If the data remains unavailable, this market will resolve according to the last published ranking.

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).This market will resolve according to the iOS app, ranked #1 in the United States on the iPhone Apple App Store's overall Top Charts under "Free Apps", as of 12:00 PM ET on the specified date. If the chart is unavailable at 12:00 PM ET, this market may remain open for up to 48 hours to allow for the data to become available. If the data remains unavailable, this market will resolve according to the last published ranking. 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).
Volume
$1,876
End Date
Sep 18, 2026
Market Opened
Sep 11, 2026, 8:30 PM ET

Resolver

0x69c47De9D...
This market will resolve according to the iOS app, ranked #1 in the United States on the iPhone Apple App Store's overall Top Charts under "Free Apps", as of 12:00 PM ET on the specified date. If the chart is unavailable at 12:00 PM ET, this market may remain open for up to 48 hours to allow for the data to become available. If the data remains unavailable, this market will resolve according to the last published ranking. 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).ChatGPT holds the strongest market-implied odds for topping the US free App Store chart on September 18 because it has maintained the #1 position through early September amid steady download velocity driven by ongoing large language model improvements and user retention in the productivity category. Recent Sensor Tower and Similarweb data show it ahead of Meta’s Muse, Vinted’s marketplace app, and Google Gemini, with no major new releases or regulatory events shifting momentum in the past week. Competing apps like TikTok Pro and Google Maps trail due to narrower daily spikes rather than consistent breadth. Traders appear to view the five-day window as too short for a sudden reversal absent an unexpected viral catalyst or platform-wide promotion.

This market will resolve according to the iOS app, ranked #1 in the United States on the iPhone Apple App Store's overall Top Charts under "Free Apps", as of 12:00 PM ET on the specified date.

If the chart is unavailable at 12:00 PM ET, this market may remain open for up to 48 hours to allow for the data to become available. If the data remains unavailable, this market will resolve according to the last published ranking.

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).This market will resolve according to the iOS app, ranked #1 in the United States on the iPhone Apple App Store's overall Top Charts under "Free Apps", as of 12:00 PM ET on the specified date. If the chart is unavailable at 12:00 PM ET, this market may remain open for up to 48 hours to allow for the data to become available. If the data remains unavailable, this market will resolve according to the last published ranking. 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).
Volume
$1,876
End Date
Sep 18, 2026
Market Opened
Sep 11, 2026, 8:30 PM ET

Resolver

0x69c47De9D...

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Frequently Asked Questions

"#1 Free App in the US Apple App Store on September 18?" is a prediction market on Polymarket with 6 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "ChatGPT" at 66%, followed by "Muse" at 10%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 66¢ implies that the market collectively assigns a 66% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"#1 Free App in the US Apple App Store on September 18?" is a newly created market on Polymarket, launched on Sep 11, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "#1 Free App in the US Apple App Store on September 18?," browse the 6 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "#1 Free App in the US Apple App Store on September 18?" is "ChatGPT" at 66%, meaning the market assigns a 66% chance to that outcome. The next closest outcome is "Muse" at 10%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "#1 Free App in the US Apple App Store on September 18?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.