is there a fun gamified step counter/running app?

Trying to get my child to go out and run a bit with me, worked ok so far but I know it might get boring at some point.

So I was looking for any kind of children friendly app that either counts distance or steps just for a run, so not at all times, and then gives some kind of reward for that. Like a dog growing up or whatever, something ok for kids. Zombie run comes up often but I don't think my child is into that, bit too scary maybe with the zombie theme.

Other apps I found are counting steps continously, or there are some elaborate minigames connected. I really don't want my little one to spend more time on a screen, so thats not great either. Like Pokemon Go, not into Pokemon yet anyway but its too much aside from the actual running/walking.

Anybody got a good suggestion that goes in that direction?