Sealed on your iPhone
Your personal chats are encrypted on your device and opened only on your friends’ devices. Our server relays scrambled data it cannot read.
How? →ToastyAI — Private messaging for iPhone
Messages only you can read.
Keys anyone can check.
ToastyAI is an end-to-end encrypted messenger for iPhone — with an AI you can invite into any chat. It talks, joins your calls, posts live cards that update themselves, and every encryption key goes on a public, tamper-evident log.
Coming soon to iPhone
See how we prove it →
AI agents
Meet the newest member of the group chat.
Invite an AI into a conversation the same way you’d add a friend. It reads the thread, answers in it, speaks up on voice calls, and hangs out until you remove it.
You invite it. Your chats, your guest list.
iMessage forwards your messages. ToastyAI answers them.
Meet the agents →Live cards
Messages that refuse to sit still.
Most messages are frozen the moment they’re sent. ToastyAI’s live cards update themselves in place — a scoreboard that ticks score, inning, and count right inside the thread. No refresh, no re-asking; the chat keeps up so you don’t have to.
Live cards, exactly as they appear in a ToastyAI chat.
Key transparency
The log that keeps us honest.
Every messaging app asks you to trust that the server handed you the right keys. We don’t ask.
ToastyAI writes every user’s encryption keys to a signed, append-only public log — like a notary’s book with numbered pages. If our own server ever tried to slip a different key into your conversation, the log wouldn’t match and the swap would be detected. We built a system where even we get caught.
Trust is good. Proof is better.
#4815key for @samsigned ✓
#4816key for @lenasigned ✓
#4817key for @arjunsigned ✓
#4818key for @mayasigned ✓
#4819key for @kaisigned ✓
#4820key for @noorsigned ✓
#4821key for @mayasigned ✓
That’s the point. It can’t happen quietly.
End-to-end encryption
A new key for every message.
Each message is locked with a fresh key, and the keys only march forward. Steal one and you’ve read one message — not your history, not your future. Cryptographers call it a double ratchet. We call it Tuesday.
We didn’t invent our own crypto — we implemented the battle-tested Olm/Megolm double-ratchet design, in Rust. Applies to personal chats.
Emoji verification
Trust, verified with emoji.
Want certainty you’re talking to your person and not an impostor in the middle? Compare a short emoji sequence — in person or on a call. If they match, the math checks out.
Security checks shouldn’t feel like tax forms.
It’s called SAS verification — details on the security page.
Cross-signing & encrypted backup
New phone. Same history. Zero server access.
Sign in on a new iPhone, approve it from a device you already trust, and your conversations come back — decrypted only on your hardware. Your key backup travels in a sealed envelope the server stores but can never open. At no step does the server ever see a key.
Voice & video
Calls that ring like calls.
Crisp voice and video — one friend or the whole group. And because ToastyAI is a real iPhone citizen, it rings on your lock screen even when the app is closed. Full-screen, swipe to answer, the way a call should feel.
- 1:1 & group
- Native iPhone ringing
- AI joins by voice
Under the hood: WebRTC media, CallKit ringing.
Table stakes
And everything a messenger should already have.
The basics aren’t a pitch. They’re a baseline.
Group chats
The whole crew, one thread.
Media sharing
Photos and videos, right in the flow.
Typing indicators
See the reply coming.
Read receipts
Know it landed. Know it’s read.
Favorites
Pin your people.
Friend codes
Add friends with a short code you share yourself — no phone-number harvesting required.
TOAST-4F2KNo ads. No tracking. Nothing to sell.
The most honest privacy policy is an architecture that can’t betray you.
We don’t mine your chats — we can’t read them.
We don’t sell your attention — there are no ads to sell it to.
We don’t harvest your data — the design leaves nothing to harvest.
Warm chats. Cold cryptography.
ToastyAI is coming soon to iPhone. No store badge yet — we don’t fake those either.