Who's at the Door? · Office #54,564

What it is

Calls itself “Simulation”.

• Calls itself: Simulation

“Category Simulation”

What it costs

One-time purchase. A free tier, free forever. Prices quoted: $2.99.

• One-time: yes
• Free plan: free forever
• Price: $2.99

“In-App Purchases Yes Remove Ads $2.99”

“One optional purchase removes all ads for good on every device signed in to your Apple ID.”

“Free · In‑App Purchases”

Who it sells to

Sells to consumers. In English.

• Sells to: consumers
• Languages: English

“Free to play. One optional purchase removes all ads for good on every device signed in to your Apple ID.”

“Language EN English”

How it runs

A mobile app for iOS, iPadOS, macOS and visionOS. Runs locally and works offline. Distributed through the App Store.

• Kind: mobile
• Runs on: iOS · iPadOS · macOS · +1
• Runs where: on the device, offline
• Distributed via: App Store

“DuoDoor is a door-closing reaction game built around the hinge of iPhone Duo. Your phone is the door.”

“Requires iOS 27.0 or later. iPhone”

What it works with

Names DuoDoor and Game Center on its pages.

• Names: DuoDoor · Game Center

“DuoDoor is a door-closing reaction game built around the hinge of iPhone Duo.”

“Game Center leaderboards for Fastest Close and Flinch Three”

What it offers as proof

Live, no waitlist. Try it without signing up.

• Instant signup: yes
• Trial asks for: nothing

“Free · In‑App Purchases”

“Free to play.”