HP-42S

[Thomas Okken]

(11-08-2020 02:05 AM)Dave Britten Wrote:  I don't know if the current build of Free42 will work on the 4 or 5S (the whole 32/64 bit thing), but I think the 7 SE is new enough to run it.

The current build of Free42 won't run on the iPhone 4, but it will run on the 4S or later. It supports 32-bit but requires iOS 8.0 or later, and that version of iOS doesn't run on the iPhone 4 or earlier.

iPod touch, 5th gen. or later, should also do the job.