I purchased v1.29.7 for my android phone. I download Stellarium to my android tablet under the same Google account and now I have to purchase Stellarium again to gain acess to the advanced settings. Other apps allow multiple devices once one is purchased. I also have a copy of Stellarium on my laptop. I am confused with the developer's actions for additional money to support an additional app (which is a fantastic app). I will need to move on to another app more suited to my multiple needs.