This was an etherium wallet that supported all ERC20 tokens, highly private decentralized considering that the keys are stored on the device. Most of the users chose their way of use since it is really difficult to manage.
The main problem is that they only accept Etherium and most users need wallets that support more assets on their devices.
Currently checking its official site on github it has no recent updates, also its website is out of service.
In general for now I do not recommend using this wallet, since if you have any problem you will not get any type of support.