Copay

Enables shared wallets requiring multiple signatures for transactions, ideal for families or businesses as highlighted in the key features, ensuring secure fund management.

Available on iOS, Android, and desktop environments for consistent access, per the description, allowing users to manage Bitcoin across devices seamlessly.

Uses hierarchical deterministic wallets to generate new addresses per transaction, enhancing privacy and security, a core feature mentioned in the key details.

Provides full code transparency for user verification, emphasizing control over private keys and avoiding reliance on closed-source alternatives, as per the philosophy.