Effective September 4, 2026

Privacy Policy

The short version: StampLog stores dive stamps on this device. It has no account, analytics, advertising SDK, or developer server. It does not compute NDL or a safety score.

Stamps

Site names, depths, durations, dates, and depth profiles stay in StampLog's local app storage on the device. Passport PDFs you export are created on the device.

Purchases

Apple processes the StampLog Pro Lifetime purchase. StampLog can read StoreKit entitlement status. ToolBistro does not receive payment-card details.

Tracking and data sale

StampLog contains no third-party analytics, advertising, cross-app tracking, or data-broker SDK. ToolBistro does not sell personal data.

Delete your data

Deleting StampLog removes its local app storage from the device. ToolBistro cannot recover deleted stamps.

Contact

Email privacy questions to tianwenliuyu@gmail.com.