Monzo has two brilliant features with the roundups for savings and the personal loans that are really easy to manage and pay back to save money on interest. It would be great if you could have your round ups go directly to paying off your loan. When it goes into savings it builds up and there would be the temptation to use it on other things whereas if it went directly on your loan it could really help people pay them off quicker.
Watch this space
If like to add Flex to the suggestion as well
This is a great idea!
I do this manually with my flex at present.