4FourTwo is a free emulator for Android devices.

4FourSecond offers the ability to access the DS emulation software, including the DS game cards.4FourSecond is compatible with Android devices running Android 4 or newer.

It works with the DS Emulation software and can run on phones running Android 2.2 and higher.4 FourSecond can run games from the Android DS Emulators app, and it can run DS games from other apps running on Android devices, including Android apps running from the Google Play Store.4EightSeven is a similar app that runs on Android 4 and up, but it only supports Android 2 or higher.

It also only supports games from Android 2, 3, and 4.