Privacy Policy

Provider: Yu Zhang
Privacy contact: zhanyufsl@icloud.com
This policy applies from its first public publication.

Information you keep in ProofCabinet

ProofCabinet helps you organize room and container names, item names and categories, purchase dates and amounts, currencies, serial numbers, warranty dates and notes. You can attach up to three images per item, including photos of items, receipts or warranty documents. These records and app-managed image copies are stored in the app's local storage on your device. Internal record identifiers, timestamps, filenames, dimensions and integrity checksums help organize and restore your records.

There is no ProofCabinet cloud account or automatic inventory synchronization in the current version. Device backups and file services you choose may store copies elsewhere under their own settings and policies. This policy does not promise that operating-system backups exclude app data.

Camera, photos and files

The app requests camera or photo-library access when you choose to take or attach an image. You can cancel or revoke access in iOS Settings. The app copies selected image bytes into its storage. Images may retain embedded metadata; ProofCabinet does not promise to remove location or other image metadata. The app does not request device GPS access to assign room names.

When you select a backup to restore, a copy may be placed in the app's temporary storage. A backup can contain item records and attached images, including personal information visible in receipts or notes.

Exports and backups you choose

CSV and PDF exports, ZIP-format backups saved with the .homeinventory extension, and backup restoration require the one-time unlock. A PDF is a text/table summary and does not embed your attached images; backups include managed attachments. Sharing uses the system share sheet. You choose recipients and destinations, which may include third-party or cloud services.

Backups use checksums to detect integrity problems. They are not password-encrypted. Keep backups and exports in storage you trust and share them only with intended recipients. ProofCabinet cannot delete copies held by a recipient or a file provider.

Purchases and external services

Apple processes the one-time in-app purchase. ProofCabinet requests product pricing, purchase status and transaction verification through its purchase integration to determine feature access and restore purchases. There is no card-entry form in the app, and the app does not request your payment-card number.

Purchase verification can require connectivity and Apple service availability. Apple and other operating-system or integrated components may process purchase or diagnostic information under their own privacy practices. Local inventory storage does not mean that every component processes no information. Destinations you choose for sharing have their own privacy practices.

Purchase diagnostics

Internal testing includes an in-app purchase diagnostic feature. The app's diagnostic implementation keeps a limited event history in memory for the current session, with no app-authored diagnostic upload or persistent receipt/account storage identified. Apple, the operating system and integrated components may have separate diagnostic or logging practices. This policy does not guarantee that those services collect no information.

Retention and deletion

Local records remain until you edit or delete them, clear local records in Settings, replace them with a restored backup, or remove app storage. The app attempts to remove corresponding managed attachment copies and displays a warning if cleanup fails. Backup restoration replaces the current inventory rather than merging it.

Clear local data does not remove original photos in your photo library, exported files, external backups, recipient copies, or copies retained by system backup providers. Temporary exports and import copies may remain until app or system cleanup; clear-data is not a guarantee of erasing all temporary files.

The provider cannot recover records solely from your device. Keep a verified backup before clearing or replacing records. Purchase ownership is managed through Apple; clearing inventory is separate from restoring the unlock.

Support and privacy requests

Contact zhanyufsl@icloud.com for privacy questions or requests. Send only the information needed to describe the issue; do not send passwords, payment-card details, private receipt images or a complete inventory unless necessary and deliberately agreed.

Yu Zhang receives and handles support and deletion requests sent to this address. Emails and attachments are used only to handle the request.

Working emails and attachments are deleted within 90 days after the request is closed. Deletion requests are handled with a target of 30 days; this target is not an unconditional guarantee. There is no fixed response-time commitment.

Deletion of working emails and attachments does not guarantee removal of email-service-provider backups. Those copies are subject to the provider's retention and deletion processes.

Website hosting

When these pages are delivered through Cloudflare Pages, Cloudflare may process visitor IP addresses and traffic information to deliver and protect them. These static pages include no advertising or analytics scripts, sign-in or submission forms. Cloudflare services may use security or service cookies; this policy does not guarantee a cookie-free or log-free hosting service, a fixed hosting-log retention period or deletion of provider backups. See Cloudflare's privacy policy and Cloudflare's cookie information.

Changes

When the described practices change, the provider will publish an updated policy and identify when it applies.