Slo-Mo via front camera, and option to trigger a second (phone) camera; Please !

+1, yes please.  I mirror to a tv screen so I'd very much prefer to use the better cameras on the back of my phone.  slo-mo would be nice, but I can slow it down in an editor easy enough.  just having access to the much better and wider angle cameras on my S21 would be nice

+1 

slowmo Camera with 240 fps would be great. In the normal mode I can’t see the impact. 

and drawing in the video like other apps(mirror vision) would be great too.

the video capability in the garmin app are lacking for sure, we need slow-mo

+1. Slow-mo, suppot for rear cameras, frame by frame navigation and some basic drawing capabilities would really be nice

You need software that is dedicated to what you are trying to achieve, rather than a "feature" of software meant for other purpose. If you like using the iOS devices, check out the app Swing Profile. I used 2 iPhones and was able to achieve recording of DTL and FO views, I connected both iPhones via HDMI to a computer running OBS and then that computer to a TV screen, it worked okay.... The best solution is to buy high speed cameras and use them with a program called Kinovea. This is by far the best solution for capturing swings and syncing and playing them back for analysis. Keep in mind though, without sufficient lighting no matter how good your cameras are you will not get good video. Also, as you record higher Frame rates getting past 120/sec you will start to pick up flickering from any LED light sources, so be careful on the lights you choose. Here is a link to a good write-up about slo motion setup... https://golfsimulatorforum.com/forum/build-your-own/computer-systems/321301-2021-primer-on-dual-high-speed-video-recording-of-a-golf-swing

+1

Sorry dude but you're 100% wrong. The flight scope app achieves this seamlessly. All you have to do is open the app and it lets you choose between front and rear cameras, regular and slow motion, and sync each shot with the data from the radar. It even trims the clips so all you get is the few seconds where you're swinging. It also lets you draw on your body lines and circles to show where you're staying in plane. Flight scope also achieves a multi camera approach with their multicam app. It literally syncs video from multiple IOS and Android devices with the radar data. 

Here's a shot made fully in one app drive.google.com/.../view

Personally, I find viewing swings on handheld devices tedious, which why I switched from Swing Profile to Kinovea.  The swing data is a nice feature, though... that I do not have a solution for. Now, I think it is important to note what you left out of your comment is the app you are comparing "features" with is only compatible with a $15,000 launch monitor, the X3... So while it is a nice solution, it comes with a much higher price tag... therefore maybe I am not "100% wrong"... 

This is not an x3, it s a $500 mevo. And you can view all the videos on The website. I'm sorry, but Garmin is way behind the compitition.

I have an R10 on order, but if it's not using the front camera of my 13 Pro Max and can't cast to an iPad Pro in Landscape, the Mevo Plus may become the goto choice for me.  I need to see clear direction from Garmin on their intentions