Privacy policy

Information collected when the app becomes available

The app manages your Sign in with Apple identifier, app account ID, authentication information, purchase transactions, ticket grants, redemptions and refunds, and acquired artworks. We also store account-linked artwork completion dates, registration dates, time spent on first completion, and completion order.

Information on your device

Puzzle progress, settings, cached images, and local completion records are stored on your device. Syncing purchases does not sync an unfinished puzzle board. Authentication tokens are kept in secure device storage.

How information is used

We use this information for authentication, purchase verification, ticket and artwork delivery and syncing, completion records, refunds, abuse prevention, troubleshooting, and answering support requests. We display aggregate completion counts for artworks.

Website and support

This website does not install advertising or analytics scripts or cookies. When you connect to the app APIs, image delivery, or this website, the hosting provider may process connection information such as IP addresses for delivery and security. When you email us, we receive your email address and message. Do not send passwords or payment card numbers.

Service providers

We use Apple for authentication and in-app purchases, and Cloudflare for APIs, data storage, images, and website delivery. We use Google’s Gmail to receive, store, and reply to support email. We do not receive payment card details. These providers process information under their own privacy policies. Information may be processed outside your country depending on service locations.

Active accounts and deletion

While your account is active, we retain authentication, balances and shortfalls, purchases and refunds, acquired artworks, and completion records as needed to provide and restore the service. Inactivity alone does not remove acquired artworks. Account deletion revokes Apple authorization and deletes your server-side account, sessions, balance, purchase, artwork, refund, and completion records. Per-artwork numbering counters without an individual account mapping remain.

Minimal deletion records for recovery

To prevent deleted accounts from reappearing after backup restoration, we retain only the former internal account ID, deletion time, and expiry time with restricted access and purpose. These records are not anonymous. Their permitted use expires 30 days after deletion. Physical removal occurs in a scheduled cleanup, normally within about five minutes after expiry; failures may delay removal until recovery and cleanup. They are not used for purchase reconciliation or carrying balances into a new account.

Support, logs, backups, and accounting

We remove support messages and attachments from our mailbox and copies we manage one year after resolution. We retain ordinary diagnostic logs we manage for at most seven days. When the app becomes available, app database recovery backups we manage will be retained for at most thirty days. After restoring a backup, we remove previously deleted account data before reopening the service. Deletion processing, backups, and legal retention within providers’ own systems, including Google and Apple, follow their respective policies. Our deletion action does not guarantee simultaneous erasure of every provider-held copy. Legally required accounting evidence is stored separately from individual app ledgers, for the period and from the start date required by the applicable law for each document type. Accounting does not justify retaining app accounts or acquired artwork lists for seven years across the board.

Your information

Start account deletion in the app settings. Contact support to request access, correction, deletion, restriction of use, or withdrawal of consent. You do not need to send an email to delete your account. We may need to verify your identity. Local device records may remain after account deletion.

Policy updates

We will update this page when our practices change and announce significant changes in the app or on this website.

Operated by

湯澤 広希

yuzawalabs.dev@gmail.com