Ordnance Survey Maps
I have a number of OS maps that I have purchased and have digital copies. These seem to be accessible on my mobile devices but the subscription on my computer appears to want me to take out a Premium Subscription.
Although I have searched high and low for this I believe that this changed when OS upgraded their service and offered apps that run on mobile devices. If I try and install the app from the Google Play Store on my computer it tells me that I don't have a device associated with my Google Account. This device is a Windows mobile device, in other words an Android or Google phone Ordnance tablet.
The advantage of having a digital copy
When documenting an area it is useful to have a map of the region to place on the page.
As I can no longer display an OS map on my computer directly I have to generate a map on my iPad and then email it to myself.
Update: Actually, I am now not sure that I ever could as the digital copy of a map only really makes sense on a mobile device through sn app.
Google and Apple maps (and whatever MS/Bing/Edge use) are available on the computer but the OS maps are far more pleasing to the eye.
Having a digital copy of the OS map on a mobile device is very useful to see where you are located. The location method may be achieved using the built-in GPS of the mobile device or it may use the location of the Internet/WiFi connection used by the device.
It is not known how this compares to other GPS/Sat-Nav offerings by Garmin and Ordnance Survey themselves. If you have purchased the paper copy of the map then you might as well download the digital version.

Below is an example of a map that I emailed to myself. Using Windows 11 and the updated Paint App the capture of the image and the saving as a PNG is really easy.

The new feature of Generative Erase is quite useful for removing items from the map so that they are not confusing.