Is a standalone potty chair or a toilet-seat insert better for training?

Reviewer consensus is that it depends on the child's age and confidence. Across parenting communities, standalone floor potties (like the BabyBjörn Potty Chair and Kindsgut Whale) are praised for younger toddlers because feet stay grounded and the child can sit unaided, while toilet-seat inserts (like the BabyBjörn Toilet Trainer) skip the cleanup of a removable bowl and ease the transition to the adult toilet. Many parents in r/pottytraining say they ultimately bought both.