GRAYLL App accounts are integrated with the Stellar Network. The Stellar Network is a Distributed Ledger, all accounts on the Stellar Network have 2 Keys, a Public Key which functions like an account address and can be shared with others safely. The Public Key (account address) is used to receive transfers. Public Keys start with the letter "G" - for example: GY4S3FML4S25HDAMJYZJYAC3CKLDWV2Z6YPV3IZXOSHSQKNSKUNQFXYZ.
The Private Key should never be shared with anyone! Your GRAYLL App account's Private Key allows you to have full control of your digital assets. The Private Key is encrypted and is used to sign transactions from your GRAYLL App account. Private Keys start with the letter "S" - for example: SBX9ZARQOFS6IM2HS2N5TVK54AEF55E3FHOXBTWA6IPEEJJ4W5WJWY7X