Breez is a Lightning Network client which makes paying in bitcoin a seamless experience. With Breez, anyone can send or receive small payments in bitcoin. It's simple, fast and safe. Breez is a non-custodial service that uses lnd and Neutrino under the hood.
For more technical information, please go to: https://github.com/breez/breezmobile.
Warning: the app is still in beta and there is a chance your money will be lost. Use this app only if you are willing to take this risk.