We still use both at 8 months. They lost interest in the toy bar on the bouncy seats. I really just use them if I need to run in the shower or kitchen and leave them for a few minutes (I use the larger rocking kind).
we stopped using the bouncy seats around 6 or 7 months, we used them A LOT before that, we fed them in the bouncers all the time. We stopped using the swings around 8 months when they got so big that the swings didn't really swing anymore with the babies in them.
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My girls never really cared for the swing, but they love their bouncers. We are still using them and I am going to cry when we finally have to stop using them, I dont know what I am going to do without them.
Re: when did you get rid of your swing and bouncy seat?
Swing - 6 months
Never had a bouncy seat.
swing - 8 monthsish
Bouncy seats - 4-5 months