Comment by bdcravens

A "simple" device isn't mutually exclusive with a configurable device. Just put it inside of the Settings app already available on the phone your mother already has. If she doesn't need it, she'll never see it.

I'd argue that the default experience for some is still too complicated; that's why Apple has Assistive Access, which lets you dumb it down:

https://support.apple.com/guide/assistive-access-iphone/set-...