But we found this great little app Cash Strapped. You can set a daily, weekly or monthly budget allowance and it's as simple as 'add money' or 'take it away'.
I've been trialling it for a day and yesterday I gave myself $100. I spent money and had $9.43 remaining. This morning when I woke up I had $109.43 to spend for the day. That's perfect for how we want to sort our daily budget.
So there's my spruik, give it a try and see if you like it.