[Wear OS General] bernarbernuli:
Here are four other cool apps I know of for Wear OS....

Shazam

This is the watch version of the well-known application that identifies the songs that are playing around you. For it to work properly you must have the app installed on the phone and have the phone nearby connected via bluetooth to the watch. The advantage provided by the app on the watch is that you don't need to take the phone out of your pocket and you can quickly identify songs you listen to. When identifying the song, it just shows the name of the song and the singer, however, in the phone the search is registered in your shazams and you can see the lyrics and video clip of the identified song.​

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Lefty

This app inverts the interface 180 degrees so that the watch can be used on the right wrist, ideal if you are left-handed and you usually put the watch on your right wrist. With this app you avoid that the buttons are facing your body, when they should be facing outwards. Install Lefty on the watch and once you open the app for the first time, enable permissions for "Display other apps" and "modify system settings", and then enable accessibility for "Lefty". Finally, tapping the purple "Rotate" button in the app will invert the entire watch interface 180°. This will affect apps, the watch face, settings, basically everything on the watch.​

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Note: Some users report that the battery saving modes and some other functions may briefly interrupt the app from time to time, but overall it works great.​

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WearMouse - Wear OS Air Mouse

WearMouse allows you to remotely control your computer mouse by moving your hand. You can use this app to connect to virtually any computer or device running Windows, Linux, Chrome OS, Mac OSX, Android, Android TV, without any additional software, it just requires it to have a Bluetooth receiver. Once the app has paired with the device you could do the following:​

Use it as a pointer for Powerpoint presentations (and also swipe slides by touching the sides of the watch screen), watch this video to see what it looks like.

Play games like Fruit Ninja with your arms (e.g. by downloading it on Android TV or installing it on a Chromebook from the Play Store).

Control a media player from the couch (e.g. when using a computer connected via HDMI).

Impress your friends with some telekinetic powers.

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Installation and Configuration:​

Install WearMouse on the watch. Once the app is running on the watch you will see the list of previously paired devices. Select "Available devices" and select the device you want to pair.

When you have a paired device, connect to it.

Now you can choose between the 4 emulation modes and you're done.

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Modes:​

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The application has four emulation modes:​

Virtual mouse mode: You move the cursor with your wrist, on the watch screen you will see two buttons to emulate when you click with the left and right mouse button, also a top drawer to configure the motion tracking depending on how you will use the watch (on left wrist, on right wrist, or held in hand as a laser pointer), and a bottom drawer for some additional functions: click and hold and middle click. If the watch is equipped with a rotating crown, you can also use it for scrolling.

Touchpad mode: Swipe the watch screen to move the cursor, tap to click, tap and hold to drag, tap with two fingers to right-click, swipe with two fingers to scroll. To exit this mode, touch the screen or press the right button of your watch (if you have one).

Cursor keys mode: The watch screen is divided into cursors that allow movement around the screen of the connected device. In addition, this mode allows gestures to expand the possibilities. Tap on the sides of the screen to activate the corresponding keys, double tap in the center to activate the Enter key, hold down the key to exit and there are also swipe gestures for Escape, Backspace, Space and Tab keys.

Keyboard mode: Allows you to use a mini keyboard on screen or by voice commands.

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Considerations:​

If your watch has additional buttons, you can use them to quickly switch between different input modes.

There are also some settings available. You can choose to stabilize pointer movements (this will smooth out smaller movements like waving your hands), enable diagonal movements for the cursor keys (which are useful for those cardboard games), or reduce the data rate (which is useful when using the app with an older Nougat-based Android TV box, and the mouse pointer just can't keep up). You can also choose whether to keep the clock connected when you minimize it (disabled by default).

If you connect and find that the mouse pointer is moving unsteadily, try turning your watch's Airplane mode on and off and then reconnecting it.

If you want to adjust the "sensitivity", do it from the pointer settings on the connected device, not in the app itself.

If you are using the app with a device that is connected to a TV, it is recommended that you switch your TV to "Game" picture mode, this should disable any post-processing that may cause lag on the TV.

Disable wrist gestures in the watch settings when using mouse mode, otherwise there is a high chance that the "back" or "go home" gesture will be activated.

Wear Logger

Wear Logger is a free app for tracking sports workouts (running or cycling) and uploading the results to Google Fit and/or Strava. The advantage over Google Fit, Strava, Ghostracer, Runkeeper or Nike Run Club is that you can clearly see in real time the distance you have run, the elapsed time and the current heart rate. It also always gets the GPS position from the watch autonomously, without relying on the phone. Also and unlike most sports apps you don't need to register to use it.​

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Characteristics:​

Displays real-time display of distance traveled, elapsed time, heart rate, pace and running cadence.

Allows you to toggle the display between elapsed time, real time, battery level and real time satellite status.

The display uses a large font, designed to be easy to read while running.

The watch display can be always on, at 1 second update intervals or at longer update intervals.

Works in standalone mode, while running/walking without your phone. Avoids that known bug, and not fixed by Google of losing GPS signal when you move away from your phone.

Starts automatically when GPS fix is acquired.

Allows auto pause for running/walking (based on pedometer) or auto pause for cycling (based on GPS based movement).

If GPS is lost during a run, it continues to record distance based on your real-time pace (leading to higher accuracy of total distance).

You can use the pedometer for step counting (for Google Fit) or alternatively it estimates steps from distance run.

Displays real-time satellite status while waiting for GPS connection (and optionally during the run).

Vibrates on laps (you can adjust the lap distance and the duration of the vibration)

Allows you to receive status messages to keep you informed: when updating watch settings from the phone, when locking/unlocking, when pausing, when finishing, when writing data to phone

Automatically lock the screen after 10 seconds, unlock by swipe, long press or button press.

Allows you to upload race results to Google Fit and/or Strava, manually or automatically. You can usually see the results in a few seconds. Data such as location, steps, heart rate and cardio points.

Allows you to delete any data uploaded from this app to Google Fit (to be 100% sure).

You can export workout data to a standard GPX file or CSV file (for use with any spreadsheet application).

No registration is required; no personal data is stored anywhere other than your existing Google Fit account.

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Installation and Setup:​

Install from the Play Store Wear Logger on the watch and phone.

On the watch, grant permissions for location and sensors.

On the phone app, sign in with your Google account.

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Instructions for use (watch and phone):​

Open Wear Logger on your watch and wait for the GPS to lock on (you need to be outdoors and ideally with a clear view of the sky).

Press the top button to start the workout (if you press it again, it will pause/resume), and press the bottom button to end the workout, press it again to send the activity data to your phone

Now in the phone app, select "Add Session" from the menu to upload your workout details to Google Fit