“We start at 6 because parents want a rite of passage, to give a card for a child’s 6th or 7th birthday,” CEO Alex Zivoder said. “That surprised us, since it was earlier than we expected. This shows to us that this is the best time for kids to start understanding the concept of money.” And that concept is linked to earning it, he added. “It’s all about allowance and chores, or a mix.” He notes that younger children do not spend much (nor have places to do so) but that takes off in the teen years, as teens do more spending and have more peer-to-peer transactions and more wages paid in from jobs or apprenticeships. “It’s the beginning of independence,” he said.

https://techcrunch.com/2022/10/12/gohenry-the-banking-service-for-under-18s-raises-55m-after-passing-2m-users/