iMessage is one of the best and cloud based messaging client for iOS developed by Apple. It comes only on iOS devices such as iPhones and iPads as well as Mac computers. Just chat at one device, and it gets synced everywhere you using iMessage with your Apple ID.
Now, some of your friends might be using Apple devices, while you are at Android. This makes limitation to interact with each because there’s no iMessage for Android platform. However, alternatively you can use WhatsApp. But, if you like iMessage and want to use it in your Android smartphone to tablets, it is now possible.
Yes. Here is the APK file of iMessage. You can now install it on your Android devices as well and chat cross platform. I mean, you can now send and receive messages between Android, iPhone, iPad, iPod touch, Mac or Windows PCs. It is yet not available on PlayStore. So, you will have to download the APK file itself which can be downloaded from this page in just one click. Installation is very easy, just like other apk files.