Yes, you can. 

Just head to the CGX app or CGX website and log in to your profile to get going.

There's one exception, though. 

If you log in to your CGX profile using your Apple account (i.e. the ‘Continue with Apple’ option), you won’t be able to use the CGX app on an Android device. That’s because the ‘Continue with Apple’ option isn’t available on the Android app.

But don't let that stop you – go to the CGX website on your Android device’s internet browser and log in using your Apple account there.