Excellent suggestions! For now, what I do is update the amount every time there's a deposit or withdrawal, and I set the initial date to the day of the withdrawal or deposit.
never speak about investment counselors on the article, I will forward the WSJ article to my 7 year old girl so she won't be scammed by her broker (me).
Thanks for your encouragement!. I started investing in my mid-30s, and compound interest really works wonders after a while. I hope my kids do better than me, though.
This is such a great idea, I would love to implement this for my kids! Could you post a link to your blog or GitHub so people who want to know can follow you when/if you release it?