MyEtherWallet It has renewed its interface and I present its paid mobile application Android and iOS.
MEW is an open source wallet that stores and exchanges all ERC-20 tokens. The wallet is associated with Bity, Kyber Network, Changelly, and Simplex allowing its users to exchange Fiat currencies for Crypto.
In terms of security MEW uses last generation encryption and storage of the keys in a secure vault within the device.