My personal observations show that SafeSky doesn't display all the traffic from FlightRadar24 (around 20% at a particular timeframe and area) compared to https://live.safesky.app with two monitors working side-by-side. I also didn't find any changes in aircraft position, as they claim to use some faster data protocol with no delays. Just exactly the same picture, but with less traffic. 

I also would love to see internet traffic without 3rd party software. 4G has very good coverage and is working well up to 2-3 km altitudes. Just place a warning that data may be inaccurate, and it's up to an end-user if they wish to take advantage of it.