Hello,
I am trying to find a feature within Skydemon, but can't find it. I understand that it is not available.

Let me explain, as per the "Warnings" tab, it would be good that a route plan by warned if not within the VFR Cruising Level (ENR 7.1-3). I understand that each country has different rules. But this would be a great feature.

Thanks in advance,
Frank.
www.funflyingwithfrank.com

That would be a bigger effort to sort out. Although there is a generic semi-circular rule we are familiar in some central european countries, different countries use different transition altitudes or even transition density altitudes or heights, some on QNH and some on QFE. Even further, some countries use different transition altitudes for regional traffic and transiting traffic. Even more further, some countries don't use semi-circular, but quadrants-rules or in extreme octuples-rules. Good luck to collect and maintain all this.