Mudcat is relaxation for me. Time well spent.
Programming in VBA &/or JavaScript is fraught, but it's the resultant app it creates that is the joy.

I have just done two on an Android (no connection, just local files) and they are a boon when I am walking around looking for OS Bench Marks. Photoshopped maps overlaid with locations & the other, when no prep has been done, for any location in England Scotland and Wales. NI is done for the whole of the island from Dublin, and no downloadable data available.

Now, all that programming eats up time ................. and the temper.