I have seen a demo. They put measurements in 4 grades: 1 till 4. 4 has most bubbles. You have to upload your diveprofile via Subsurface in the app, then you have the doppler measurement and together it gives points on how 'risky' the dive was. You also can upload a profile without measurement and also see if it was risky or less risky. Then you can simulate how you can improve your profile by taking another decogas, or do deco on a higher PO2 than 1.3 on ccr. Or if you make the last stop longer. Or take other bottomgas, etc.
Adding helium to your backgas if it is air is a profit.
It is interesting, but sadly expensive. I also don't know if you will do all the efford in uploading profiles and measurements every time (I now never do this). But if I get the chance to try a measurement, I will do.