If you are looking for Tablet/iPad software, EV3 scheduled to disappear from App stores July 2026 and Spike to disappear from App stores in 2031. I strongly recommend you make an image of your tablet as save it, for example iPad users should back up their iPad using "iCloud Backup". Eventually... regardless of the software you use, if you continually update your Operating System, your software will stop being compatible. So the golden rule is, if it is working... don't change anything! *If you are attempting the NXT download, and it doesn't install, you will probably need an older operating system!