Whispr is a privacy-first messaging app built on the Base network where your crypto wallet is your account. Instead of an email and password you connect a wallet, sign in once, and start chatting. You can message any registered wallet, run group conversations, share photos, video, audio and documents up to 50 MB each, batch-send one message to ten recipients with a single signature, and attach ETH or USDC payments directly inside a thread. Messages are written to smart contracts rather than stored on a Whispr server, and a relayer plus paymaster cover gas so sending costs nothing.