It is…unfortunately.
Several years ago I sort of “borrowed” my wifes ipad on a fairly permanent basis where it did not leave my project studio. I attached lots of velcro to the back of it.
I’m saying this because Metagrid (I don’t know about Metagrid Pro) works on very old generations of iPads. And Metagrid is still being upgraded and supported. I think many users buy old iPads just to use Metagrid. The cost of the software is relatively cheap.
But alas, almost 2 years ago I decided to buy a new iPad only for Metagrid, and gave the old one back to her. I think my kid still uses it for games or something…