The allowance app where you're the bank.

You keep holding the cash. The app tracks balances, compounds interest, and gives your kids their own login so they can see what their money is doing.

TrezzerChest dashboard showing a child's allowance balance and transaction history

You already give your kids money. This makes it count.

1

Add your kids

Create a profile for each child. Set their allowance amount, schedule, interest rate, and donation match — whatever fits your family.

2

The app runs the math

Allowances deposit on schedule. Interest compounds automatically. Your kids log in with their own account and watch their balance grow.

3

You hand them the cash

When they want to spend, they request a withdrawal. You approve it and hand over the money. That's the whole thing.

Compound interest they can see

Set a rate and a compounding period. They watch $50 become $51.25, then $52.52. Hearing "your money grows" is one thing. Watching it happen in your own account is another.

Spending becomes a real decision

When your kid withdraws $20 for a toy, they see what that $20 would have become. Maybe they still buy it. But now it's a trade-off, not just "can I have this?"

Giving gets multiplied

Set a donation match. Your child gives $5, the app shows $15 went to the cause. They learn that generosity has leverage — and that feels good.

Built by a dad. Free forever.

I made this for my own kids. No premium tier, no ads, no data selling. Just a tool I wanted to exist.