Psamathe
Veteran
I use the FlowX app (iPhone, iPad, Android, Mac) which gives access to loads of different forecast models (including ICON, KNMI, Meteo France, CMC, ECMWF, RMI, NOAA in the UK, other forecasts for other areas of the world).Yes, indeed re the rainfall % probability, but it's more the 'confidence index' that would be helpful in assessing whether or not the various models are converging.
I'm pretty sure I've mentioned it before, but Meteociel is a really useful: you can Google "Meteociel xxx" for UK cities, and it gives you the raw output from five or six different models (including ICON) without human interpretation, and if you look at the different models you can see the degree of convergence (or not) for yourself, so giving a fair picture of 'confidence'.
It presents the data on a map you can time scroll. Couple of features I find really useful are that it gives up to 14 dys forecast and eg select ICON-D2 (best in my opinion) when the forecast time ends it automatically switches to ICON-EU, etc. ie the 14 days forward includes several forecasts depending on how long they forecast. Plus you can display several different layers at the same time eg wind streamlines and rain and maybe could, etc. Vast numbers of parameters and very configurable eg in example I have sun, cloud and wind on upper graph, temperatures on lower though for some locations have winds (speed and gust plots) on lower graph. I also have the Sun & Moon positions displayed. Just slide finger vertically (fine) or horizontally (course) to scroll through time.
Line almost vertical to beft is because I've set it to ICON-D2 and that line is the limit of the D2 area so west of the line is showing ICON-EU.
It's a free app BUT optional subscription and most of the good stuff is subscription only. But as I do a lot of outdoors I find it worth the subscription (for myself).