Public Android build at
https://releases.wikimedia.org/mobile/android/apps-android-wikipedia-sprint…
iOS builds are currently limited to Wikimedia-internal distribution due to
Apple installation restrictions. We may be able to open up to public betas
again in a bit though.
These versions now include basic account creation! Don't go too crazy
testing it -- there are per-IP throttling limits in place and you can get
yourself temporarily blocked if you register a lot of accounts. ;)
-- brion