Droid4X has been around for a long time, as you might be able to determine by the appearance of its software. It's a fairly well-trusted emulator that runs fast and smooth, even on lower-end hardware, which is how it's become popular to use among online crowds. Though the polish may not be comparable to some of the other emulators on this list, the graphic design doesn't necessarily look bad, and it's easy to navigate through the app with a mouse and keyboard. With a clean red and white design and a simple three-tab interface, it's easy to browse through the software, selecting your apps as need be and launching them from within the desktop app. The ability to keep apps in folders also keeps things clean and easy to use, and with full root access, you can basically install any application from the Play Store, regardless of their requirements (with one major exception we'll cover below).
The emulator's interface, as mentioned, is simple and easy to learn. Along the top of the app is three tabs, which you'll use to browse through the app. The middle and primary tab, Desktop, allows you to launch your apps like you would on any Android device. Every app you install gets dropped here, from your System apps (helpfully placed, by default, in the SysFolder) to games synced from your Google Play Store account. You can install apps as need be, and any apps that require special permissions will be granted as necessary. The system apps, in addition to settings and the Play Store, also include a browser, a downloads menu, and a gallery for looking through photos. It's worth noting that the browser is fairly broken, and trying to load most pages on it will result in poor formatting. That said, if an app requires you to load, say, a help menu inside the browser, it's nice to have the option.
The other two tabs to the left and right of desktop are, respectively, Recommended and App Store. The first, theoretically, should display a list of recommended apps for you to download. In our case, however, the emulator displayed an error message, stating that the feature wasn't available in our area. The second tab, App Store, is a quick link to the Google Play Store, which displays as anyone else would imagine it would on their device. You can download compatible apps using your device, though it's worth noting that not every app is compatible. Droid4X uses Android 4.2.2, a version of Android that will be five years old in the month following publication of this article. Most Android emulators use older versions of software; it's easier to load pre-Android 5.0 versions due to their ease of updating and support as opposed to post-Android 4.4 KitKat. But with the oldest version of Android on our list, Droid4X has the widest variety of unsupported apps. While plenty of apps on the Play Store make an effort to support Android back to 4.4, we were able to find a number of examples of popular apps not supporting Android 4.2.
Still, Droid4X is a reliable, easy to use emulator that supports a wide variety of apps from different services. As best as we can tell, the emulator doesn't feature advertisements, which means it's easy to dive right into the app emulation. What's also great is the app's wide variety of technical options. You can customize the display of your emulator, ranging from 720p to 1080p, as well as your DPI. Your CPU core count, memory, and language are all also configurable, and Droid 4X even offers a remote control app for Android on their site, which allows you to control the emulator from your phone. Most importantly, however, is the ability to remap your keyboard controls to match the game or app you're playing at any given time. With specific options available for FPS games, this is something you'll want to use if you're into that specific genre, though the remapping controls also work for all of the apps available on Google Play. Droid4X is a solid offering for emulating Android; we just wish the app was able to provide a newer, faster, and safer base Android version instead of 4.2.2.