A Android app

I need an Android app that have two functions 1) when it launch, it will be able to automatically install several apk from a path, e.g. url or usb disk or local flash storage I know this can be done if the app have root access.. 2) connect to internet, check clock and update system time Need to update time at least once per boot this device is mains powered and doesn't have bettery, it losses the clock when main is off. For the Android app, I will sign the app using system certificate so the app will have root access to do whatever you need... since the app can't do it without root.