Total elevation gain / Total ascent on a dashboard on a pre-planned route
I was wondering if it's possible to see the value of my current elevation gain/total ascent on a dashboard when riding a pre-planned route (gpx file).
I searched everywhere and couldn't find any information about this.
My phone doesn't have a barometer sensor - can I still benefit from this option or do I need a phone with a built-in barometer or a smartwatch with a barometer sensor that can provide the necessary data via bluetooth?
How can I make this work (if possible with my phone without a barometer sensor) or what do I need to make this work?
Like I said - I can't find an answer to my questions, so I'm asking for help :)