Monzo says it has resolved an issue affecting its mobile banking app on Tuesday afternoon after thousands of customers reported difficulties accessing it.
Platform outage monitor Downdetector saw more than 4,000 reports from users complaining of problems shortly after 15:00 GMT.
The company earlier acknowledged an issue affecting its app - telling customers who tried to use it that it would "not be fully functional" while it investigated.
A Monzo spokesperson said "customers can now use the app as normal."