A fully customizable (albeit not free) solution is Claravine. 

If their parameters come after yours, they should be prefaced with & not ?Talk to your agency.

also the summary change and summary number boxes - what even is this? why is that number so tiny?? Fill the space!

The max breakdown is 5 items? This is basically useless.

You can use the Data Sources functionality to import budget totals into an event metric. It requires a date and key value so you will need to allocate the budget across each day of the month. It's a bit finicky, but I've been using it for offline spend and channels data for a couple years and it's g...