About this app

Hello,

✓ SailFreeGPS displays current location, course (COG), speed (SOG), max speed, Trip distance, speed average and magnetic compass.
✓ SailFreeGPS displays COG and SOG history (6h) to help you to see trim effect on your sails.
✓ SailFreeGPS filters GPS information for more accuracy (average of an amount of last measures you can set).
✓ SailFreeGPS can share your position, COG, SOG to your friends.
✓ SailFreeGPS helps you during Man OverBoard maneuver (MOB). It stores the location and lead you to it.
✓ SailFreeGPS displays your track on google map (24h).
✓ SailFreeGPS helps you during Regatta with its countdown timer and its departure line
✓ You can store up to 8 waypoints and activate a GOTO function with ETA (Estimated Time to Arrival computation)
✓ You can save/load track to/from GPX/KML file
✓ You can calculate distance and heading
✓ You can use it on every boat, motor or sail boat.
✓ You can now activate an anchor alarm or a course alarm.

I am an amateur sailor who has decided to create this app after a Transatlantic cruise.
I add periodically functionalities to this app when I have some spare time.

Do not forget to calibrate your compass for better results.

Please send me an email for any question or problem : sailfreegps@gmail.com

Encourage me to continue by subscribing to premium version.

List of features of Premium Version

Premium version DOES NOT CONTAIN ADS.

GPS INFO Tab:
✓ Double click on SPEED will reset trip, max and ags speed
✓ Long click on COURSE to display compass
✓ Double click on coordinates to display/hide position

Graph Tab:
✓ Double click COG graph to switch to full screen mode

MOB Tab:
✓ Displays of relative bearing of the MOB
✓ Displays of tack angles
✓ Double click graph to switch to full screen mode

Waypoint Tab:
✓ Up to 200 Waypoints
✓ Displays of relative bearing of Waypoint
✓ Displays of tack angles
✓ Double click graph to switch to full screen mode

Map Tab:
✓ Displays of SOG and COG (speed & course)
✓ Your track segments are displayed according to your speed

Anchor alarm:
✓ Anchor area can be a polygon and you can adjust its shape

Regatta Tab:
✓ "Gun Button" allows to round seconds to nearest minute
Ex: 4:03 => 4:00 or 3:58 => 4:00
✓ Enter exact start time up to the second
✓ Displays of time to kill/save continuing the same way (speed and course)
✓ Displays of ideal speed to cross the line at 0:00 on the same course!!!

Settings Tab:
✓ Displays reverse color (white on black back)
✓ You can select Hybrid map
✓ Select on which duration is calculated the speed scale of your track: last 5min, 15 min or all the track
✓ Select your tack angle value. It will be displayed on MOB and WAYPOINT tabs

Exit:
✓ Ask to save the track before Exit

New features

Bug fix for regata

App Permissions

Allows an app to access precise location.
Allows an app to access approximate location.
Permission an application must hold in order to use ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS.
Allows applications to open network sockets.
Allows applications to access information about networks.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.