With AutoStarter you could open apps on system startup, even if these apps do not have an option to start on boot. To do so, select the desired apps within AutoStart. To verify that an app is compatible, hold long on it's name and it sould be executed. System apps are marked with an exclamation mark.
- Start the apps as usual or in *background*
- *Delay time* until the apps are started after boot finished
To select more than 3 apps you have to donate.
Donator-App & Features: https://play.google.com/store/apps/details?id=de.defim.apk.autostarter.donator