In real time. Your client does not download the blockchain. Your client does not download the blockchain. It uses a dedicated server network to index the blockchain.

Your wallet can be recovered from a secret seed.

Security: Your seed and private key are safe. Your seed and private key will be encrypted on your hard drive. They will never be sent to the server.

Low trust. The information received from the server is verified with SPV. The server uses SSL for verification.

No downtime. Your client will not be bound to a specific server; if your server fails, it will switch immediately.

cold storage. Sign transactions from a computer that is always offline. Use a machine without your key to broadcast them.

Electrum Cash is open source and was first released in August 2017.