TRS-80 Emulator is an Android emulator that allows you to run TRS-80 Model I & III applications. Please note that this version is alpha-ware and the CoCo is not supported. The app is a port of xtrs to Android and is released under the Apache V2 Open Source license. It is completely free, and instead of giving it a one-star rating, users are encouraged to wait for updates or help make it better.

The emulator supports cassette tapes, floppy disks, sound, and different keyboard types, including a tilt interface where the accelerometer triggers cursor keys for games. Game controller support is also available, with joystick and DPAD buttons mapped to appropriate cursor keys. Users can define different keyboard layouts for landscape and portrait mode, and when an external keyboard is detected, it will automatically be used instead of the configured soft-keyboard. Chromecast support is also available, allowing users to cast their TRS-80 applications to their big screen.

Overall, TRS-80 Emulator is an excellent option for those who want to run TRS-80 Model I & III applications on their Android device.