Android Emulator vs QEMU

Android Emulator simulates Android devices on a computer so developers can test applications across device types and Android API levels without a physical device. It comes with Android Studio and needs no separate installation. Predefined virtual-device profiles cover phones, tablets, Wear OS, Android Automotive OS, and Android TV. An Android Virtual Device sets the Android version and hardware characteristics, and has private storage for user data, SD card data, and cache. The emulator can simulate calls, text messages, locations, network speeds, rotation, hardware sensors, and Google Play Store access. It supports multiple instances, keyboard mapping, gamepads, and root access. The first launch may take about a minute; later launches can use a snapshot and start faster. Supported systems include 64-bit Windows 10 or newer, macOS 12 or newer, Linux, and ChromeOS. The recommended baseline is 16 GB RAM and 16 GB disk space, with higher requirements possible for newer API levels or larger virtual devices. Android Studio on ChromeOS deploys apps only to connected hardware devices.

QEMU is a free, open-source machine emulator and virtualizer. System emulation models an entire machine, including its CPU, memory and devices, so it can run a guest operating system. User-mode emulation runs processes built for one CPU architecture on another. The package also includes qemu-img, a command-line utility for creating, converting and modifying disk images. QEMU can work with KVM, Xen and Hypervisor.Framework so guests can run directly on the host CPU. Supported build platforms include Linux, macOS, FreeBSD, NetBSD, OpenBSD and Windows. Windows support is limited to 64-bit, while macOS requires the newest version currently available; support for the prior version is eventually dropped. For complex networking and storage configurations, the project recommends management tools such as virt-manager. Its security guidance distinguishes virtualization with an accelerator and listed machine type from TCG non-virtualization use, which does not provide guest-isolation or security guarantees. QEMU is released under GNU GPL version 2, with some components under specific licenses.