Fast and fluid video calling app with a small footprint
License: Free for personal use only
Duo is a Google's free one-to-one video calling app that puts simplicity at the fore. There's an emphasis on reliability and fun, no faffing around, so you're left to just getting on with your calls.
Duo is based on your phone number, allowing you to reach anyone in your phonebook.
Duo delivers calls in crisp HD video (up to 720p) and audio.
Google Duo key features:
Pick a contact and jump right in, the simple interface puts video front and centre stage
Duo's live preview feature lets you see the caller before you pick up
Google Duo isn't technology dependant. You'll be treated to the same high-quality call experience (720p) whether you're using WiFi or on-the-go.
The app allows video calls with users across both Android and iOS platforms