Effective September 12, 2026
Privacy Policy
Cube, Let's Solve! works without accounts, advertising, analytics, or tracking. Cube data is processed only on the device. This policy explains what happens in the app, on this website, and when you contact support.
Who is responsible for your data
The developer and person responsible for personal data processing is Artem Beletskiy. For any privacy question, contact hello@rebusarium.com.
Data in the app
The app does not create accounts or transmit personal data, device information, location, advertising identifiers, or usage history to the developer. The app contains no analytics, advertising, or third-party trackers.
Preferences, entered colors, the current cube face, solution step, and technical color values used for recognition are stored locally on the device. The developer cannot access this data. It remains until you delete the saved solve in Settings or uninstall the app.
Subscriptions and purchases
The optional Premium subscription is offered and billed through the App Store. Apple processes payment details; neither the app nor the developer receives your card number or other payment details.
To display prices, complete or restore a purchase, and verify an active subscription, the app exchanges the product identifier and entitlement status with the App Store. This information is used only to unlock paid features and is not sent to the developer's server. You can manage or cancel the subscription in your Apple ID settings.
Camera
Camera access is requested only to recognize the cube's colors. Frames are processed directly on the device, are not saved as photos or videos, and are not transmitted anywhere. The app does not recognize faces or process biometric data.
You can revoke camera permission in the iPhone or iPad system settings. Manual color entry remains available without camera access.
This website
kubik.rebusarium.com has no registration, contact forms, advertising systems, analytics, or marketing cookies. We do not create visitor profiles or keep a history of their activity.
To deliver a page, the server and hosting provider technically receive the IP address and connection data. They are used only to deliver and protect the website, not to identify visitors, serve advertising, or perform analytics.
Support requests
If you email us, we receive the sender's address, the message, and any information you voluntarily include, such as your name, device model, operating system version, or attachments. We use this information only to reply and resolve the reported issue. Contacting support is optional and does not affect the app.
Support correspondence is retained for no more than 90 days after the last message, then deleted unless longer retention is required to protect legal rights or comply with a binding legal obligation. Do not send identity documents, payment details, photographs of people, or other sensitive information.
Sharing with third parties
We do not sell data or share it for advertising, analytics, or marketing. Apple processes purchases under its own terms and privacy policy. Hosting and email providers may process the minimum information needed to operate the website and deliver email. They are required to protect that data to a standard no lower than the one described in this policy and may operate in another country.
Data may also be disclosed when required by law or by a binding decision of an authorized public body.
Children
The app is suitable for children, but it does not request their name, age, contact details, or location, and it provides no communication between users. A parent or legal guardian should contact support on a child's behalf.
If you believe a child sent us personal data without permission, contact us using the address below. We will review the request and delete that data.
Your rights
You may request information about processing, a copy of your data, correction, deletion, or restriction, and you may withdraw consent to further correspondence. Email hello@rebusarium.com from the same address. We normally respond within 10 business days and may ask you to confirm that the request relates to you.
Security and changes
We use HTTPS, limit access to support correspondence, and do not keep data longer than necessary. If the app or its data practices change materially, this policy will be updated and a new effective date will appear at the top of the page.
Contact
Artem Beletskiy
hello@rebusarium.com