YoWA

YoWA is an unofficial WhatsApp mod that lets you personalize this popular instant messaging service with many more options than the official client. YoWA offers a variety of themes to choose from, allowing you to customize all your conversations and give each one a unique background. You'll also have access to a plethora of emoticons, the ability to send full-size images and videos, and the option to send multiple images at once (up to 700 simultaneously). This app also allows you to hide contact names and increase the font size.

Beyond the aesthetic improvements and new features, YoWA functions almost identically to the standard WhatsApp version. This means you can call any of your contacts, send text messages, voice messages, images, videos, and more. You could easily replace the basic WhatsApp client with this enhanced version and start texting your friends almost immediately.

Requirements (Latest version)

Android 4.1, 4.1.1 or higher required.