Sorry, my post was coincidentally right after yours. I originally wrote it for the ‘Monthly Update’ thread, but decided it was more relevant here.
Your point about the ‘Coin Jar’ and targets does sound annoying, although not one I have to contend with, as I don’t have targets (Android).
I’m wondering whether Monzo will implement an overall ‘target’ for the user defined period, based upon the account balance at the start of the period… Then apply the same design to each sub-category of spending. The features are very similar and this would satisfy requests for custom target start/end dates.