Is CySmart Android Installation file .apk is available for Android version 4.2 ? How can i get this?
There are no separate APK file for CySmart App. You can ask for the source code at http://www.cypress.com/support and generate your own APK.
BLE is supported only starting with Android 4.3. Thats why you don't see the CySmart application for your phone - it just won't run. (And probably your phone has no BLE either)