Here are some of the answers to your questions regarding the IMO app.
Features of IMO App
IMO app is one of the smallest size apps when it comes to VOIP app comparison. For example, Skype and Whatsapp take more space on your device compared to IMO. Also, the amount of time it takes connectivity to happen in between the two host, you'd find IMO app better. There are no additional charges for the call and the video content being streamed. It is just like Whatsapp that uses your native connection - either Wifi or the mobile. You can also avoid downloading when you are on mobile data.
IMO app can be used to communicate with anyone in address book having the app. It can be national or international. So it all depends on how you are connected either through IMO connection or the phone-based contact.
IMO app is similar to Allo and Whatsapp. It can offer the group chat feature. It can create encrypted message. it can be good for the slow internet in 2g. It can make use of the emoji and stickers across devices smoothly. Connectivity of the app is really good. You'd find better video and audio on the web. You can use it to invite friends from the address book and also through email feature.
Comparison with Skype
Think of skype as premium service which has its set of pros and cons. For example.
1. Skype has premium paid phone network and custom caller ID and device, that's not something IMO app has. It is just device app.
2. No dedicated number with IMO, whereas Skype premium can give a dedicated number.
3. Skype is a lot slower than IMO app. Also, skype is heavy on the device with size and background service. IMO app, on the other hand, is more lightweight.
4. User status can be changed on skype but not on the IMO.
5. IMO is not suitable for the file transfer. But Skype is good for file transfer and desktop to device sharing.
6. Conference feature is not available with the IMO but skype free and premium both services has this feature.
7. IMO app can't make free calls to landline and other mobiles. On the other hand, the Skype can do so in the premium feature.
These are some of the features and the highlight of the apps. Though due to the user base gathering on other premium networks, IMO app failed to get as many users like skype and Whatsapp.