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Steer is the app to control the Madman Marine AP-WRC3i series of autopilot remote controls. With it, you can use your iPhone or iPad as a remote control on board your sail boat or power boat!
iSteer provides mode selection (Auto/Standby/Track/Wind Vane), course changes (+/- 1, +/- 10) and auto-tacking to port and starboard right from your iPhone!
Visit for further details and to purchase the necessary hardware.
Note that this app will only work with the proprietary Madman Marine remote control hardware for Raymarine® autopilots and requires ios7 or higher.