Users will be able to make transactions with Libra by 2020, Facebook says, both through a standalone app called Calibra as well as with Facebook’s own family of apps. Unlike bitcoin and some similar offerings, the price of Libra is tied to low-risk assets, which should prevent the speculative behavior and wild price swings plaguing other digital currencies. The currency will be overseen by the Libra Association, a Switzerland-based collective of more than a dozen companies, including Visa, Uber and Mastercard, each of whom have invested at least $10 million in the technology. Users of Libra will pay $1 to use Libra which will sit in a bank account and earn interest which will pay the Libra Association.