I updated Mixpad for OS X to version 1.5.1 then checked iOS on iPad and it’s running 1.5 went to the apps store and
it seems 1.5 is current version for iPad, no update required?
No update required for any other version (PC, iOS, android) – SQ-MixPad V1.5.1 for macOS has one small change as some older mac hardware was unable to display the RTA correctly (or display it at all in some cases).