Currently, the app hasn't been released. But once it has, it'll come in the form of a macOS .dmg file, and the Android version will be an Android APK.
100% free. Never will you have to pay to use this service.
At the start, it won't. But as the app gets more users, it'll be implemented.
Yes! The web version will be released a little after the Mac version, but it'll definitely exist. It'll be hosted here on this website too.
End-to-end encryption (E2EE) is widely considered the most private and secure method for communicating over a network. Similar to other encryption methods, E2EE transforms readable plaintext into unreadable ciphertext by using cryptography. This process helps to mask sensitive information from unauthorized users and ensures that only the intended recipients—with the correct decryption key—can access sensitive data.