Effective and last updated: November 3, 2026
AlchanLabs operates the Room Layout app (방배치도) for Android and iOS. This policy explains how Room Layout handles information.
1. Personal information we collect
Room Layout does not require sign-up or login. It does not send your name, email, phone number, location, contacts, advertising identifier, usage history, or diagnostics to the developer, and it does not use any advertising, analytics, or tracking SDKs. AlchanLabs does not collect personal information from users of the app.
2. Information stored on your device
The following information is stored only on your device. AlchanLabs cannot access it. Room Layout does not operate its own server or sync between devices.
Plans: plan names, room names and dimensions, doors and windows, and the type, size, and position of furniture and stairs
2D shape furniture you create
App settings: language, appearance, and export options
Whether the full version has been purchased
Deleting the app also deletes this information from your device. However, if you have turned on your phone's device backup (Google backup or iCloud backup), the operating system may include this information in that backup. Such backups are kept in your Google or Apple account, and AlchanLabs cannot see them.
3. In-app purchase
The full version (one-time purchase) is processed by Google Play Billing or Apple App Store In-App Purchase. Payment methods and payment details are handled by the store, and AlchanLabs never receives card numbers or other payment details. The app only stores, on your device, whether the store reported the purchase as complete. When you open or return to the app, it checks with the store that the purchase is still valid, and removes this record if the purchase was refunded or canceled. Google's or Apple's privacy policy applies to payments and purchase restoration.
Room Layout uses the internet only for store purchases, purchase checks, and purchase restoration, and to open web documents (this privacy policy and support) that you choose to open. It does not use camera, photos, location, contacts, or microphone permissions.
When you choose to export a plan as an image (PNG) or PDF, share it, or print it, the app uses your operating system's sharing feature or print service. The exported file goes to the app, service, or printer you choose, and that app's or service's policy applies. Depending on the print service, a document may pass through servers on its way to the printer.
If you contact alchanlabs.dev@gmail.com, we process your reply address, your message, your device, OS, and app version, and any attachments you send, only to answer and solve your issue. We keep this information only as long as needed to respond, and you can ask us to delete it.
Room Layout does not collect personal information from anyone, including children.
You can edit or delete plans and 2D shape furniture directly in the app. To access or delete support inquiry information, contact us at the email below. If app features or laws change, we will update the effective date and content of this page.
Operator: AlchanLabs
Privacy officer: Alchan Lee
Contact: alchanlabs.dev@gmail.com