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Delete data

for the ChessLynx app by CMZen Digital

Last updated: October 7, 2026

ChessLynx does not create a CMZen account or transmit child profiles or saved games to us. You delete locally stored learning progress on the device. The processing of technical purchase data, inquiries and the notification list is described below.

Progress and settings

They are stored on the device only and disappear when you delete the app. In the parent area, “Reset progress” deletes the learning progress on this device; settings remain until the app is deleted.

Purchase

A purchase stays stored by Apple or Google. Deleting the app does not withdraw from the purchase and does not request a refund. Statutory withdrawal and defect-related rights remain unaffected. The unlock can be restored with your store account via “Restore purchases” in the parent area.

What we process for a purchase

We do not permanently store purchase receipts, purchase identifiers or verification results on our servers. The device retains a local license with verification status, verification time and a derived purchase reference, and any marker for a purchase already started. Misuse counters are removed by the regular cleanup process after their hourly window ends. Normal purchase-verification logs are normally deleted after 30 days; separate audit logs may have different retention periods (Privacy Policy, Sections 4 and 6).

Requests and the “Notify me” list

If you have written to us or signed up on the website for the launch notification, we delete your information on request. Send an informal email to support@chesslynx.com. We handle it without undue delay, at the latest within one month, and confirm it by email. If we have reasonable doubts, we request only the information needed to verify your identity.

More in the Privacy Policy, Section 6: https://chesslynx.com/en/privacy/