CC Activation on 2 devices (iOS and Windows)

I AM NOT A LAWYER AND THIS IS NOT LEGAL ADVICE
I DO NOT WORK FOR ADOBE

This was not easy to find, and my reference is the one offered by the UK site
We have Adobe General Terms of Use https://www.adobe.com/uk/legal/terms.html
This mentions software, but only as one of the things that might be covered by
the license.

We find the sublicense "Software"
https://wwwimages2.adobe.com/content/dam/acom/en/legal/servicetou/Software_Terms-en_US_20190711_2200.pdf
which I believe applies to locally installed software.

Strangely, this PDF does not allow copy/paste so here I have retyped as closely as I can...
1.1 Subscription-Based Software License
...lets you activate the Software on up to two devices... however, you may not use the Software on the two devices simultaneously...

You say iOS, but most CC apps aren't available for iOS. Photoshop is. Do you mean macOS, as runs on a Mac? If so, the anwer is yes. You can activate a CC license on two Mac or Windows devices, so long as they are both for your personal use, and don't use them both at the same time.