The thing about amish is they (in theory) accept or reject a tool or technology based on whether the community will benefit or not. So a few may have cell phones, or get to use tractors etc.

But it varies a lot from community to community. I’ve seen amish run electronic distribution companies (miller tech), side by sides, e scooters and even one amish guy tearing it up on a One Wheel.

I think your calculator would be okay