We’ve just published an updated version of the OppiaMobile app on the Google Play store.
Most of the updates are minor bug fixes and performance improvements, though we have now added the option for user to progress through courses in a linear way – so only allowed to move on to the next activity after completing the previous. This can be set up for the course when it is exported from Moodle, and there is still the option to allow the user to complete activities in any order they feel.
For full details of the updates, please see the release notes.