A (?) denotes version's info here is guess-work, possibly incorrect.
| Version | Release date | ||||
|---|---|---|---|---|---|
| Android | iOS | Fire OS | Windows Phone | Windows 10 | |
| Pre-release | — | — | — | — | — |
| Alpha 0.1.0 (Xperia PLAY only) | August 16, 2011 | — | — | — | — |
| Alpha 0.1.1 | October 7, 2011 | — | — | — | — |
| Alpha 0.1.2 | October 13, 2011 | November 17, 2011 | — | — | — |
| Alpha 0.1.3 | December 3, 2011 | December 14, 2011 | — | — | — |
| Alpha 0.2.0 | February 11, 2012 | February 17, 2012 | — | — | — |
| Alpha 0.2.1 | March 14, 2012 | March 14, 2012 | — | — | — |
| Alpha 0.2.1 alpha 2 | March 17, 2012 | — | — | — | — |
| Alpha 0.3.0 | April 24, 2012 | April 24, 2012 | — | — | — |
| Alpha 0.3.2 | July 16, 2012 | July 16, 2012 | — | — | — |
| Alpha 0.3.3 | August 9, 2012 | August 9, 2012 | — | — | — |
| Alpha 0.4.0 | September 6, 2012 | September 6, 2012 | — | — | — |
| Alpha 0.4.0 rev 2 | — | September 14, 2012 | — | — | — |
| Alpha 0.5.0 | November 12, 2012 | November 12, 2012 | — | — | — |
| Alpha 0.6.0 | January 30, 2013 | January 30, 2013 | — | — | — |
| Alpha 0.6.1 | January 31, 2013 | February 2, 2013 | — | — | — |
| Alpha 0.7.0 | June 5, 2013 | June 5, 2013 | — | — | — |
| Alpha 0.7.1 | June 7, 2013 | June 7, 2013 | — | — | — |
| Alpha 0.7.2 | July 4, 2013 | July 4, 2013 | — | — | — |
| Alpha 0.7.3 | August 15, 2013 | August 15, 2013 | — | — | — |
| Alpha 0.7.4 | September 2, 2013 | September 2, 2013 | August 31, 2013 | — | — |
| Alpha 0.7.5 | September 4, 2013 | September 12, 2013 | — | — | — |
| Alpha 0.7.6 | October 11, 2013 | October 16, 2013 | — | — | — |
| Alpha 0.8.0 | December 12, 2013 | December 12, 2013 | — | — | — |
| Alpha 0.8.1 | December 19, 2013 | December 19, 2013 | — | — | — |
| Alpha 0.8.2 | — | — | April 2, 2014 | — | — |
| Alpha 0.9.0 | July 10, 2014 | July 10, 2014 | July 10, 2014 | — | — |
| Alpha 0.9.1 | July 11, 2014 | — | July 11, 2014 | — | — |