Name: Flasher light
Rating: 4.5 (2 reviews)
Author: Artax

this app lets you use the watch as a flasher with three different modes ( dimming, on-off and on-off-off ), making your activities such as running or biking possibly safer.
using it is pretty easy, select the app, use up/down to start/change the mode. use back to exist. while flashing use select to change the background color between white/red/green/blue.
this is a free application written only as a hobby, it's not standard in any way and tested only briefly on Garmin fenix6-5. 
it is totally free, does not need any permission, and gathers no information. 
Its functionality is very straightforward (just turning the backlight on and off) however you should use it at your own risk and I take no responsibility in any way.  