Is Jumperroo useful for our babies? I heard its fun. When can we start using it for our LOs?

I started when my girl's neck is kind of stable and also when she shows signs of movement like she can flip and move forward towards something which is around 5months. My girl really enjoys jumping and playing with it. So it really depends on your baby. Probably have to introduce to them a couple of times if initially the baby rejects it.