inherited kit

[total novice]

hi all.
I just received 2 syma S031's and a GT8005, with chargers and a few spares. I was given them as the guy hadn't used them for a couple of years and I have twin boys he thought might get a kick out of them. So far as I can see, the GT8005 Nneeds a replacement fly bar but seems functional otherwise. My biggest issue is whether or not the two syma craft could be flown separately at the same time.

Thanks in advance

[Red five]

the 031s may be the same frequency try both one at a time with the same controller that will tell you.