[Samsung Galaxy Watch 3] parshakov:
Always-On Speed Pro - speedometer, heart rate monitor, altimeter, gradient, and compass (heading) [Current Version: 5.3.0; Size: 275 KB; Price: $2.75]

The application shows the following metrics while keeping the device awake:

• Speed in km/h, m/s, miles/h, or knots.

• Average and maximum speed for the last 60 seconds.

• Distance traveled in kilometers, miles, or nautical miles.

• Duration of travel in minutes and seconds. Measured only when the speed exceeds 4 km/h or 2.5 mph.

• Current time in hours and minutes.

• Height above sea level (altitude) in meters or feet. Accuracy (clear sky): ±10m (±30ft) when using GPS (indicated by a dot, e.g. 953m.) and ±1m (±3ft) when using the Altimeter (no dot, e.g. 953m).

• Heart rate in beats per minute. Accuracy: normally very good; restart the sensor if way off. You can check the accuracy yourself before buying using the Always-On Heart Rate (Demo) app.

• Slope gradient (%), averaged over the last 5 or 10 seconds. Note: the accuracy depends on the speed and whether you use GPS or Altimeter to estimate altitude; very low at speeds below 10 km/h when using GPS.

• Battery percentage. Press the Back button once to check the power consumption (% or %/hour).

• Direction of movement (heading) in cardinal points and degrees. Shown only when the speed exceeds 4 km/h or 2.5 mph.

Please read the following information before using the app:

• Swipe left to open Settings. Tap to change the unit of speed or set a speed and heart rate (HRMax) limit.

• Swipe again to open the History tab, which shows the maximum and average values for the whole ride and one-minute intervals (current ride only).

• When riding a flat-bar bicycle, set the 'Screen Rotate' setting to 'left' or 'right' to align the main screen with your eyes.

• Swipe up to change the font color to white and increase the font thickness for maximum readability under direct sunlight. Expect a higher power consumption.

• Tap the speed indicator to zoom in on speed. Tap again to zoom out.

• Switch between heart rate and slope gradient by tapping the heart rate indicator.

• You will receive visual, audio, and tactile warnings when you exceed the speed limit or HRMax. You can adjust the alert volume in the settings.

• The accuracy of GPS-based metrics depends on your speed: the faster you go, the higher the accuracy. The accuracy of all metrics except altitude and gradient is very high at speeds above 20 km/h or 12 mph.

• The values are updated more frequently (every second instead of two seconds) if you use an activity tracking application on your phone (e.g., Strava or Google Maps).

• Numbers move up and down the screen at the start of every minute (e.g., 11:05:00, then at 11:06:00, etc.) to prevent screen burn-in.

• The display stays on until you quit the app.

• The app does not store your activity data and never connects to the Internet.

Two ways to calibrate the Altimeter (do this every time you launch the app or when the weather changes):

• Find out the actual altitude at the location where you start your rides (you can use the topographic/contour maps in MAPS.ME or Osmand on your phone or the pre-installed Alti-Barometer on your watch). Adjust the Pressure at Sea Level (SL) setting in Always-On Speed Pro until the estimated temperature matches the actual air temperature at your location. OR:

• Open Samsung's Alti-Barometer on your watch, tap ↺, then go to Settings → Manual Calibration. Do not enable manual calibrate, just copy the values you see there to Always-On Speed Pro.

Troubleshooting:

• Disable Samsung Health workout detection for the best, uninterrupted experience. Samsung Health → Settings → Workout detection.

• Make sure that GPS is enabled before starting the app. The app cannot enable GPS on your phone automatically. Note: do not use any power saving modes/apps on your phone because they interfere with GPS.

• If your watch has a built-in GPS, the app can use it but only if you disconnect the watch from your smartphone (for example, by disabling Bluetooth on your phone). Expect a much higher power consumption.

• Please contact the developer if you encounter a bug or if the app does not function as advertised. Feature requests are more than welcome!

There are several features that reduce power consumption (12%/h with HRM on and 9%/h with HRM off, as measured on a Galaxy Watch Active 2 44mm):

• The rotating bezel on the Gear S2 and newer smartwatches can be used to adjust the screen brightness. Note: in bright sunlight the brightness level locks at 100% and cannot be adjusted.

• Green font uses half as many sub-pixels as white font, resulting in lower power consumption.

• If you stop moving, the device will vibrate once a minute so that you don't forget to close the app after finishing your ride.

• Note: power consumption varies greatly depending on the ambient temperature.

• Disabling Bixby wake-up command may further improve battery life.