To improve the ChartKeys app, we collect usage data, not linked to a specific person. We do not store your name, email, or IP address. We do not use persistent user or device identifiers. We do not use third-party tracking or analytics.
ChartKeys does not create user accounts. The pay-once lifetime Pro features unlock is handled via the standard in-app purchase mechanism.
When you send us an email, regular email correspondence expectations apply. It is your responsibility to decide what you share.