VMOS (Virtual Machine OS) gained popularity as a tool that lets you run a secondary Android OS inside your main device—like having a “phone within a phone.” It’s ideal for running multiple accounts, testing apps, or using modded software without risking your primary system. But VMOS isn’t the only option. Whether VMOS feels sluggish, lacks updates, or doesn’t suit your Android version, several strong alternatives exist.

Here are the best apps similar to VMOS, categorized by how they function:

allow users to run an entirely separate, fully functional Android operating system inside their existing device. These apps let you safely test software, simulate root access without modifying your phone's real system, and operate isolated environments for gaming or multitasking.