As much as I would also like to see an open source port of Stellarium to Android, I don’t there is one. If you look at the build instructions page referenced above (http://www.stellarium.org/wiki/index.php/Android_port) you can see this note, which refers to the app (https://play.google.com/store/apps/details?id=com.noctuasoftware.stellarium&hl=en) referenced in the post:
“Note: There is a paid Stellarium Mobile port for Android by Noctua Software. Noctua Software was established by Fabien Chereau, who is the original author of Stellarium, and his brother. Stellarium Mobile is Fabien’s fork/port of Stellarium which was originally created for Nokia smartphones. Said app is not related to the port discussed on this page; this port is being developed with the intention of being merged into Stellarium-proper and becoming an official Stellarium.org-supported port, or at the very least staying up-to-date with any changes made to the official version of Stellarium and deviating from it minimally.”