Accuweather has a Minutecast view that shows the next 2 hours.
Most weather apps use feeds from US forecasters, which are pretty coarse grained outside the US and don’t have local knowledge i.e. how large scale patterns can affect specific areas of the UK. So they’re pretty bobbins generally, which means we’re swamped with rubbish forecasts on our phones.
The Met Office one has rain radar in it for both last 6 hours and future 24 hours, but it’s a click or two into the app or from the widget, so it’s not quite as convenient as raintoday. But I found raintoday to be ridiculous. Giving me alerts for rain under clear blue skies or half an hour into a heavy rain storm.