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You can install Android apps but they need to be in android's architecture-neutral bytecode or in the same native architecture as your main OS, because there's no emulator, Anbox runs in a container, thus interecting straight with your current kernel. So you won't be able to install an ARM app on your PC which uses an Intel x86 / 64 processor. These processors work differently than the ARM processor in your phone. However, there are other factors such as the consideration you could use a Raspberry Pi with an ARM processor, or use further emulation on your PC to function between Anbox and your kernel.