Terms of Use

Effective date: 2026-06-18

CalcMason apps and this website provide calculation aids and app information. They do not replace professional judgment, official references, local law, manufacturer instructions, flight or navigation equipment, dive training, or regulated procedures.

Use Of Results

Users are responsible for checking inputs, assumptions, and results before relying on any output. Regulated, safety-critical, or code-adjacent work must be verified with qualified sources.

Purchases

In-app purchases are processed by Google Play. Purchase availability and refunds are subject to Google Play policies and the app's published listing.

Contact

Support: support@calcmason.com