I guess the back end is providing the ‘spent today’ based on UTC and the display is working on BST?
‘Spent today’ has changed to 3.99 now 
This is also a bug when travelling. Is there a way spent today can cover the time zone you’re currently in? I know monzo now have access to gps now for fraud protection and trip reports.
@Corraidhin I think it’s a small hiccup and it updates when you reopen the app. I can’t quite remember what scenario I got, but basically, it was new day (after midnight). I made purchase, but app was showing ‘spent today’ from yesterday. Closing and opening app fixed it in my case as well.
I’m not sure where £1.99 came from though! 
I was thinking it was the £2 refund combined with the £3.99 purchase.
Ah, you are right, I missed it was a refund! I didn’t wake up yet. 
So in short, when new day comes, the app doesn’t update automatically to new day. Transactions from yesterday and today are mixed together until app is restarted.
Could be. But I took the liberty of querying the developer API at the time and it also said: spend_today:-199
I’m more confused now it says £3.99 actually.
Hmm, but if this was time zone issue, then it wouldn’t be corrected by restarting the app at 00:05, am I right?
I have a feeling I might be buying some bus tickets at 00:01 tonight! 
Why is 3.99 more confusing? Wouldn’t that be the only transaction you’ve made on Wednesday (at the time)?