What is Abra?
It is a cryptocurrency wallet and an exchange. This is an all-in-one tool to help you manage your crypto and fiat currencies. Mobile application allows you to buy and sell cryptocurrency directly through its wallet. It acts as a money and transfer app, lets you send funds to others quickly and easily.
Exchange fees/ Deposit and Withdrawal.
There are no fees for exchanging currencies within the app, but there is a small spread built in. You can only deposit or withdraw a maximum of $2000 in a 24 hour period. Banks can also apply their own highest transactions.
It's been around for 2014, a California-based company and its founder and CEO is an experienced and relatively well-known Fintech engineer in Silicon Valley.
It is also sophisticated, complex and technologically secretive by cryptocurrency standards. It is not open source, and has not released technical details of how its complex system works.