Yeah, that’s definately the best way to go I think. I’m currently looking through this list to see what’s on offer.
15 Best FREE Drone Mapping Software 2021
However, I am also now very wary given the earlier comments about inadvertently voiding your DJI Warranty by using Third-Party Apps (thread is here: Flight Planning for DJI Drones App ) .
Caution at all times. Knowing of the trap helps you to avoid it I suppose.