2016 CRF250R Get ECU—Which one?

I am looking at purchasing a Get ECU and had some questions. I currently am finding 2 that states they fit my bike. One is an RX1-Power and the other is a GP1-Power. What, if any, are the differences between the two? I also noticed one mentions an online tuner tool and app while the other doesn’t mention either of these. Is one just an updated version of the other and if so which is the better one to purchase?

Thanks for any info. Trying to find something to occupy my time during the lockdown since all the local tracks are shut down at the moment.