Apple - Missing Night Shift after upgrading to 9.3

Night shift isn't supported on your hardware. See the footnote 1:

Night Shift is available on iPhone 5s or later, iPad Pro, iPad Air or later, iPad mini 2 or later, and iPod touch (6th generation)

https://www.apple.com/ios/updates/

I read on another forum that night shift requires a 64 bit system,, iPods are 32. I can't confirm this , but it sounds possible. Could they have made 32 bit app, possibly,