Privacy Policy
Marine Prop Slip Calc stores a small set of calculator defaults, local saves, and sea-trial notes on your iPhone so the app can reopen with your preferred unit system and recent inputs.
Data collection
Marine Prop Slip Calc does not collect personal data from you.
Accounts
Marine Prop Slip Calc does not require account creation or sign-in.
Analytics and tracking
Marine Prop Slip Calc does not use third-party analytics or ad tracking SDKs.
Data sharing
Marine Prop Slip Calc does not sell or share your data with third parties.
Local storage
Marine Prop Slip Calc may store the following on device so the app can work offline:
- preferred speed unit
- last-used RPM, gear ratio, pitch, speed, and assumed slip values
- local saved setups and sea-trial notes you choose to keep on device
- calculator defaults needed for offline use
Network access
Version 1.0 does not require a backend service or internet connection for core app use.
Scope
Marine Prop Slip Calc is a planning and diagnostic calculator only. It does not read live engine data, provide automatic propeller recommendations, or guarantee boat performance outcomes.
Contact
For privacy or support questions about Marine Prop Slip Calc, email yangguangwin@icloud.com.