Nebula is multi-platform, therefore the installation is different depending on which type of OS you want to try it on. Your trial is downloaded as a compressed .zip file. It contains the Nebula.jar, .apk and .bin files and the required installation tools for each. The DOCUMENTS page has complete installation instructions. Android devices must be version 4.4.2 or greater and the nebula.bin is for an ESP8266 WiFi module which is available through the STORE.