We have one as well, but since we're on a variable rate tariff(Octopus Tracker) it's completely useless - it doesn't know the current electricity/gas price, it seems to receive rate updates from the network about once every few weeks - so the numbers it displays are just wrong.
I've made my own little Raspberry Pico display that queries today's energy prices and shows those, but I have not been able to show today's energy consumption alongside(and therefore show the day's cost so far). Octopus provides an API to query the kWh used....but only for the last day. I even got their little Octopus Mini that broadcasts live usage to their app but I have not been able to query the live data from it from my raspberry, I don't have the necessary skills in web technologies to do that unfortunately :-(
Mine comes with a display that shows live usage by energy rather than price. The octopus app shows my usage for yesterday in £ for octopus tracker, broken down into 30m increments.
I've made my own little Raspberry Pico display that queries today's energy prices and shows those, but I have not been able to show today's energy consumption alongside(and therefore show the day's cost so far). Octopus provides an API to query the kWh used....but only for the last day. I even got their little Octopus Mini that broadcasts live usage to their app but I have not been able to query the live data from it from my raspberry, I don't have the necessary skills in web technologies to do that unfortunately :-(