Our APKs are compatible to Android TV Box, Android Mobile phone, PAD and other android devices. 1.For moblie phones and PAD, please install the PAD version. 2.For Android TV Box, Please install the STB version. 3.fire tv，firesitck，Nvidia shield, please in stall the STB version by USB. 4.For other devices like Enigma2, please contact us for special service.