Yolla is an international calling app that saves you a ton of money on calling abroad. We have clear HD quality, cheap calls and many useful features that you'll like. Call any phone worldwide, be it mobile or landline. Though Yolla is not a free calling app, you can still earn credits with promo programs. Use them to call worldwide and don’t spend on calls. We have been helping people to stay in touch since 2015. 9 out of 10 users are satisfied with Yolla and 7 out of 10 give us 5 stars. WH