I’ve been hearing good things about Flux and have just seen that Monzo are in ‘Closed Pilot’ to start using Flux.
I think this is a brilliant idea 
I hate having so many paper receipts around (I usually keep them in a box) so having a place in the app where I can find them quickly and easily will be excellent for me!
Also, the ability to have digital loyalty stamps directly linked to the receipt is another excellent idea.
How far is Monzo to implementing Flux? I got on can’t wait to use it