The app itself allows users to chat with friends and family for free, as long as they are also using a version of IMO. Here's a quick breakdown of its features:
- Send unlimited instant messages
- Group chat with friends, family, roommates and others
- Keep chats in sync with mobile
- Make high-quality video and voice calls
- Share photos and videos
- Express yourself with hundreds of free stickers!
Keep in mind the IMO app was made natively for Windows Phone 8.1, although it can also work with Windows 10 Mobile. There's no word if IMO plans to release a native Windows 10 UWP app in the future.
Thanks to Aji, Armughan, Deven and Thamarai for the tips!