Best Seawise alternatives: apps like Seawise

CVoyager

Route Planner

Free

This maritime navigation tool uses advanced algorithms to plot efficient and safe sea routes. It offers ETA calculations, a global port database, and customizable preferences for vessel types and cargo. Designed for maritime professionals, it aims to reduce voyage times and improve fuel efficiency.

Anchor Alarm Pro

GPS drag watch for sailors

Free

This app functions as a reliable anchor watch, alerting you with a loud alarm if your boat drifts outside a set safe radius. It offers flexible anchor zones and accurate positioning options, allowing you to monitor your vessel remotely.

CoNav

Deck Officer's Tools

$6.99

This app provides essential tools for deck officers, including compass error calculation, celestial navigation, and ETA calculations. It offers offline functionality with precise algorithms for various maritime tasks, such as unit conversion and port information.