ISRO has successfully launched more than two hundred satellites of foreign agencies. Affordable launch price, reliable launch vehicles are the two instrumental factors bringing many contracts for ISRO from foreign agencies.
APK stands for Android package kit. This is a file format that is used by the operating system in Android for the installation and the distribution of middleware and mobile apps. The files are actually analogous to the other packages like APPX for Microsoft Windows or the Debn kind of packages within debian based kind of OS such as Ubuntu.