I remember that not so long ago all the apps had a limited, read-only functionality. I wonder if it has changed?
Is there an Android app that allows you to post questions/comments to SE sites?
Stack Apps is a question and answer site for apps, scripts, and development with the Stack Exchange API. It only takes a minute to sign up.
Sign up to join this communityThe stack exchange API officially does not support posting questions or answers, but it does allow posting comments.
So you can install the StackX app and use it to comment on posts.
There is also an Official Android App in alpha development. It looks like they are still taking sign-ups for guinea pigs volunteers. ;)