If you’re an Engineer,
A Scientist,
A Researcher,
Or just like Measuring Things
You can use Frank Harr’s Conversion App!
So, what makes it so special?
It’s relatively small, doesn’t need access to the internet, doesn’t collect user data and has no ads and no in-app purchases.
That’s not special.
It is the singular expression of one person’s concept of how unit conversions should work.
Not special enough.
It represents at least 29 systems of measurement:
https://play.google.com/store/apps/details?id=appinventor.ai_RoyceGrey.Frank_Harr_s_Conversion_App