IMO is an app that allows you to make free calls and texts on your wireless phone.
If you have a plan that only allows a certain number of texts and calls each month, this app can be handy. It allows you to make voice and video calls and send texts for free from your mobile phone, as long as you are connected to wireless internet. You also can share files and photos, although you will still use your data service for that and could incur charges if you exceed your allotment.
IMO is free and easy to download, and it is very simple to use. One of its best features is that all video calls are in high definition.
If you are looking for a way to get additional free calls and texts using your mobile phone, then IMO is the app to download.