Last Updated: 2026-11-06 This Privacy Policy describes how information is handled by the iOS app "Zuanroom" (the "App").
The App can be used without creating an account or signing in. Charts, imported images, text and stitching records are stored on your device. Image conversion runs locally. The App does not automatically upload this content. Files you export are handled by the destination you choose. iOS backups follow your OS and account settings. If you use the contact form, only what you type into it is sent to Google. Do not include personal information such as your name, email address, or phone number. We cannot provide individual replies.
Local data is used to create, display and export charts and resume stitching. Counts of actions such as Pro views and completed purchases are also stored only on the device. Contact-form submissions are used only to investigate bugs, correct content, and improve support quality. They are not used for advertising, tracking, or profiling users.
The App does not automatically send charts or stitching records to third parties. When you choose an export or sharing destination, your selected file is passed to that destination. The contact form is provided through Google Forms, where submitted content is processed and stored.
The App does not use any analytics SDKs or tracking tools. If advertising is introduced in the future, this Policy will be revised to clearly describe how information obtained by the advertising provider is handled. No advertising SDK is included in the current version.
Purchases of premium features are processed through Apple's StoreKit, and payment information is managed by Apple. The App never obtains your credit card information or other payment details.
Delete a chart from the library, or delete the App in iOS Settings to erase its local saved data. Exported files and OS backups must be deleted separately from their respective destinations. Contact-form submissions are retained only as long as needed for support and quality improvement. To request deletion, use the contact form and provide enough information to identify the submission.
The App does not knowingly collect personal information from children under the age of 13.
The App is not affiliated with thread manufacturers. Display colors are approximate reference values and are not guaranteed to match physical floss or printed colors. Use images and text that you have the right to use.
This Policy may be updated from time to time as necessary. If a material change is made, we will notify you within the App.