I have been testing and exploring every possible aspect of the R2-D2, R2-Q5, and BB9-E app enabled droids. Android tablets, phones, iOS devices, Force Band, Commodore 64, speak and spell, etc. Individually and every combination of group pairing that I could think of. As of now, I have yet to include BB8.
https://www.amazon.com/Sphero-R201ROW-R2-D2-App-Enabled-Droid/dp/B071KSR86B

