Private chat, from your wallet.
Whispr is a privacy-first messaging app where your wallet is your account. Chat one-to-one or in groups, share photos, video and files that only the people in the conversation can open, and send a payment without leaving the thread.
Private by default. No email, no password, no gas.
maya
0xa11c…19e4
Did you get the photos from Saturday?
Here they are. The last one is my favourite.
Everything you expect from a chat app.
Private by default, plus the things only a wallet can do: sign in without an account, and send money with a message.
Conversations
One-to-one or the whole crew.
Message any registered wallet, or start a group with as many people as you like. Only the people in a conversation can read it.
- Private direct messages and groups
- Search by address or message
- New messages arrive live
Design crew
4 members
ana
New draft is up. Can everyone take a look?
leo
Looks sharp. Are we shipping Friday?
Friday works. Final files coming here.
Media
Share the photo, not a link to it.
Send images, video, audio and documents up to 50 MB each. They open right in the chat, and only for the people in it.
- Images, video, audio, documents
- Private to the conversation
- Up to 50 MB per file
clip.mp4
Video · 18 MB
note.m4a
Audio · 1.2 MB
Batch send
Tell everyone at once.
Write one message, add up to ten recipients, and send it to all of them with a single signature.
- Up to 10 recipients
- One signature for the batch
- Each one lands in its own chat
To
- 0xa11c…19e4delivered
- 0x7d2e…b41cdelivered
- 0x3f90…02aadelivered
Payments
Settle up without leaving the chat.
Attach ETH or USDC to a message. Only the two of you know who it went to, and they claim it with one tap.
- ETH or USDC
- Private by default
- No gas to send or claim USDC
Dinner was 0.01 ETH each.
Payment attached
0.01 ETH
Here's my share. Thanks for organising!
settled to maya
Up and chatting in a minute.
Behind each message is a signed request your wallet approves. The app handles the rest.
Step 1
Connect your wallet
Any wallet, or sign in with email to get one. Your address is your account: no names, no sign-up form.
Step 2
Activate your address
Sign once to set up your private inbox and record your address so others can reach you. It costs no gas.
Step 3
Say hello
Start a chat or a group and send your first message. A relayer submits it, so you pay no gas.
- 0 ETH
- to send a message
- 50 MB
- per file you share
- 10
- people per batch send
- 1 GB
- of storage per user
Three contracts run the whole app.
There is no Whispr server holding your messages. The app reads and writes these contracts on Base, and you can inspect each one yourself.
Whispr
Profiles, conversations, messages, media and payments.
Forwarder
Checks your wallet's signature, then sends the call as you.
Paymaster
Covers the gas for relayed messages.
Questions, answered.
A privacy-first messaging app where your wallet is your account. Chat one-to-one or in groups, share photos, video, audio and documents that only the people in the conversation can open, message several people at once, and send a payment in the thread when you need to. Everything runs on smart contracts on Base.
Yes. Start a new conversation and add as many registered wallet addresses as you like. Everyone in the group sees the conversation in their inbox.
Text, photos, video, audio and documents. Files up to 50 MB open right in the chat, only for the people in it, and each user has 1 GB of storage.
Yes. Batch send lets you write one message to up to ten recipients and send it with a single signature.
No. You sign each message in your wallet, the app's relayer submits it, and the Paymaster covers the gas. Whoever runs the app needs to keep the relayer and Paymaster funded.
Only you and the people in the conversation. Messages, photos and files stay private to the chat. Payments are private too: anyone can see that money moved, but not who received it. What's on the public network is who messaged whom, and when.
Yes. Hover a message and delete it, and it disappears from the chat. A record that a message was sent always stays in Base's history, but what it said stays private.
Base. The contract addresses are listed on this page.
Say hello from your wallet.
Connect a wallet, sign once and start your first private conversation. It takes a minute and costs no gas.