Here's a Wall Street journal article reviewing and explaining some newer money management tools for kids
https://www.wsj.com/articles/apps-and-websites-that-teach-tweens-and-teens-about-money-1504880857
https://www.investors.com/news/busykid-lets-you-reward-kids-with-stock-with-a-catch/
Creating a custodial account for kids so they can buy stocks
https://learn.stockpile.com/2017/07/21/what-is-an-utma-account/
"ThreeJars makes money management fun and easy for 5 to 13 year old kids and parents. Kids learn to manage "money" through saving, spending, and charitable giving jars - with guidance from Mom and Dad.
Here's a Wall Street journal article reviewing and explaining some newer money management tools for kids
https://www.wsj.com/articles/apps-and-websites-that-teach-tweens-and-teens-about-money-1504880857
People seem to like famzoo as well