Default Apps like Boot Manager?

Does anyone know of a dual boot app like Boot Manager: https://play.google.com/store/apps/d...x2.bootmanager that can run on the 300?

There's so many awesome roms for this device and I haven't unlocked my bootloader yet, so I wanted to test some roms out, like I've done on other devices. I submitted a device req to the dev of the app, but wondered if anyone knew of a similar app that worked on the 300.