I play from my smartphone. For this I downloaded the browser "kiwi browser" a Chrome clone I guess. I was able to download "keychan" and it works fine. It's a bit slower, but it was necessary to have my participation in this super project.
Congratulations for what you are doing, I'm looking forward to those new updates. It will surely make the project take off straight to the moon. Thank you!
Oh, that's actually pretty cool! Just looked it up and Kiwi Browser allows one to install Desktop Chrome Extensions on Mobile. Point for you for this intelligent hack :) Let's hope such measures will be unnecessary soon with the release of @keychain app for both Android and iOS.