The numbers inside the circles are the readings "now". Numbers outside the circles are totals for the day.
Top left is power produced by your solar panels.
Bottom left is power going in or out of your battery and the charge level of the battery in %.
Top right is power going in or out of the grid through your main meter.
Just below that is power being used by your household load.
Solis have a guide to the app, but it has changed a little since that was made. Most notably the House circle used to be at the bottom.
The figures don't always add up. This is because they change while the app is getting them.