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icon for #1 Free App in the US Apple App Store on September 25?

#1 Free App in the US Apple App Store on September 25?

icon for #1 Free App in the US Apple App Store on September 25?

#1 Free App in the US Apple App Store on September 25?

Sep 25

Sep 25

Muse from Meta 51%

ChatGPT 42%

Google Gemini <1%

Vinted: Pre-loved marketplace <1%

Polymarket
NEW

Muse from Meta 51%

ChatGPT 42%

Google Gemini <1%

Vinted: Pre-loved marketplace <1%

Polymarket
NEW
icon for Muse from Meta

Muse from Meta

$152 Vol.

39%

icon for ChatGPT

ChatGPT

$2,593 Vol.

42%

icon for Google Gemini

Google Gemini

$316 Vol.

<1%

icon for Vinted: Pre-loved marketplace

Vinted: Pre-loved marketplace

$317 Vol.

<1%

icon for Amazon Prime Video

Amazon Prime Video

$276 Vol.

<1%

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).Muse from Meta's rapid ascent after its September 8 launch as a proactive personal AI agent drives the tight market odds, with the app claiming the top free spot in the US App Store by mid-September through strong download momentum exceeding early ChatGPT benchmarks. Traders weigh Muse's agentic features—such as autonomous task handling across email, travel, and shopping integrations—against ChatGPT's established user base and productivity positioning, while low-probability outcomes for Google Gemini and others reflect limited recent traction. The 50% implied odds on reserved apps highlight uncertainty around potential new releases or ranking volatility just days before resolution on September 25.

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
$3,654
End Date
Sep 25, 2026
Market Opened
Sep 18, 2026, 6:03 PM ET
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).Muse from Meta's rapid ascent after its September 8 launch as a proactive personal AI agent drives the tight market odds, with the app claiming the top free spot in the US App Store by mid-September through strong download momentum exceeding early ChatGPT benchmarks. Traders weigh Muse's agentic features—such as autonomous task handling across email, travel, and shopping integrations—against ChatGPT's established user base and productivity positioning, while low-probability outcomes for Google Gemini and others reflect limited recent traction. The 50% implied odds on reserved apps highlight uncertainty around potential new releases or ranking volatility just days before resolution on September 25.

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
$3,654
End Date
Sep 25, 2026
Market Opened
Sep 18, 2026, 6:03 PM ET

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Frequently Asked Questions

"#1 Free App in the US Apple App Store on September 25?" is a prediction market on Polymarket with 5 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "ChatGPT" at 42%, followed by "Muse from Meta" at 39%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 42¢ implies that the market collectively assigns a 42% 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 25?" is a newly created market on Polymarket, launched on Sep 18, 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 25?," browse the 5 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 25?" is "ChatGPT" at 42%, meaning the market assigns a 42% chance to that outcome. The next closest outcome is "Muse from Meta" at 39%. 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 25?" 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.