Install the APK
Allow “install from unknown sources”, then tap the file.
Open & get a code
No sign-up — a code appears instantly, encrypted end-to-end.
Chat, call, or nearby
Real-time text and voice online, or connect over Wi-Fi / Bluetooth with no internet.
Changelog
Version history
v1.4.2Latest
DownloadAug 19, 202686 MB4 downloads
- 1.4.2 — 2026-08-11
- Online calls that actually connect, louder audio, and a security-hardening pass (from a full-app review).
- Calls
- Online calls now use a relay when needed. Two phones on different networks (mobile data, different Wi-Fi) couldn't hear each other because a direct connection was blocked. Calls now fall back to a relay so they connect across networks. The audio stays end-to-end encrypted through the relay — it only forwards scrambled packets, it can't listen.
- Audio is loud by default. Calls now switch to the loudspeaker automatically when they connect, so you actually hear the other person instead of a faint earpiece while looking at the screen. (Tap the speaker button to switch to earpiece; your choice sticks.)
- You get told when a call can't connect instead of it silently vanishing after a long wait. The "calling…" timeout is shorter (25s), and a message explains what happened.
- More time to find a connection on slow mobile networks (fixes calls that dropped before they even started), and a stale call can no longer "ghost-ring" you when you reopen a chat.
- Group calls got the same loudspeaker default, and a fix so a dropped person in the mesh reconnects more reliably.
- Security (hardening)
- Firestore security rules are now shipped in the app's repo (firestore.rules) and lock down the important stuff: no one can overwrite your encryption key mid-handshake (which is how an eavesdropper would try to sneak in), and your session's host can't be hijacked. Deploy them with firebase deploy --only firestore:rules.
- Stronger safety code — the emoji you compare is now 7 symbols instead of 5, so it can't be faked by brute force.
- The app no longer allows Android to back up its private data, so the anonymous identity can't be lifted off a backup.
- Polish
- Faster app start (trimmed the splash delay).
- The welcome screen can no longer overflow on small screens or large font sizes.
- Bluetooth "wants to connect" notifications now always clear themselves when the request ends
v1.4.0
DownloadAug 10, 202686 MB10 downloads
- 1.4.0 — 2026-08-11
- Group conference calling.
- Group voice calls in a private group, tap the call icon to start (or join) a conference. Everyone in the call connects directly to everyone else (a peer-to-peer "mesh"), so nothing routes through a server. See who's in, mute, switch to speaker, and leave.
- Still end-to-end encrypted each pair's call setup is sealed with the group's pairwise keys, and the audio itself is encrypted by WebRTC. Nobody in the middle can listen.
- Reviewed before shipping a multi-agent code review caught and fixed several edge cases: a participant who force-quits now times out instead of ghosting the call, a re-connect no longer re-applies a stale answer, and the mic can't leak if you leave mid-connect.
- Text only over Bluetooth; conference calls need Wi-Fi / internet. Best with small groups.
v1.3.1
DownloadAug 10, 202686 MB2 downloads
- 1.3.1 — 2026-08-11
- Private groups, and a link-safety check.
- Private groups tap "Create private group" for a code; anyone who enters that code in "Enter a code" joins the same group. Group messages are end-to-end encrypted sealed separately for each member, so the server still only stores unreadable ciphertext — and each message shows who sent it. Tap the group title to see who's in. Ephemeral: when the last person leaves, the group is deleted. (Group voice/conference calling is coming next.
- Link safety if a message contains a link, tapping it shows a warning first ("this could be unsafe") with Cancel / Open anyway, so nothing ever opens by surprise. Applies in every chat.
- Confirmed: voice calls already have mute and speaker controls (plus End) on the in-call screen.
v1.3.0
DownloadAug 10, 202685 MB0 downloads
- 1.3.0 — 2026-08-11
- Offline Bluetooth mode talk when there's no Wi-Fi or internet at all.
- Connect over Bluetooth from the nearby screen, "No Wi-Fi? Connect over Bluetooth" finds other Hush phones over Bluetooth and connects the two directly, with nothing in between. Perfect for the same room with no network.
- Request → notification → accept when you ask to connect, the other phone gets a notification and an accept / decline screen. Nothing opens until they say yes. (This also confirms notifications work on your device.)
- Signal quality the chat header shows a live Strong / Good / Weak indicator, so you can tell when you're drifting out of range.
- Still end-to-end encrypted the same X25519 + XChaCha20 encryption and safety-code check as everywhere else, layered on top of the Bluetooth link.
- Text only over Bluetooth the radio is too slow for a voice call, so calls still use Wi-Fi / internet.
v1.2.1
DownloadAug 10, 202685 MB2 downloads
- 1.2.1 — 2026-08-10
- A polish pass over 1.2.0, from feedback.
- Cleaner names dropped the emoji. Everyone now gets a clean two-word name like Velvet Truffle, shown in bold with a simple letter monogram avatar.
- One name everywhere your name is now the same in both code sessions and Nearby mode (it used to show a different random one nearby). A ↻ next to your name on the home screen re-rolls it.
- New splash the plain white logo-square is gone, replaced by an animated hush wordmark that flows out of the launch screen.
- Welcome screen a one-time intro on first launch explaining what Hush is (anonymous, encrypted, calls, nearby). It never shows again after that.
- Instant code your code now appears the moment you open the app. Signing in and saving the session happen quietly in the background instead of making you wait.
v1.2.0
DownloadAug 10, 202686 MB2 downloads
- 1.2.0 — 2026-08-10
- Big update: private voice calls, a name for every session, real end-to-end encryption, a serverless nearby mode, and a faster start.
- Voice calls — tap the call icon to talk. Calls are peer-to-peer and encrypted; the other person gets an incoming-call screen with accept/decline, and in-call you can mute or switch to speaker. (Works while both people have the chat open; ~free using public STUN, so a small fraction of calls behind very strict mobile networks may not connect.)
- Nearby mode (same Wi-Fi, no internet) — "Talk to someone nearby" finds other Hush devices on your Wi-Fi and opens a fully serverless, end-to-end-encrypted chat + call straight between the two phones. Nothing touches the internet or any server. (Needs both phones on the same, non-isolated Wi-Fi.)
- Session names — everyone gets a playful throwaway name for the session (🫐 Blueberry, 🍭 Lollipop, 🧁 Cupcake…). You see who you're talking to, and how you appear to them. Names vanish when the session ends.
- End-to-end encryption — messages and call setup are sealed on your device (X25519 + XChaCha20-Poly1305). The server only ever stores unreadable ciphertext. A safety code (5 emoji) lets you confirm no one is intercepting — compare it, or read it aloud on a call.
- Faster startup — a branded splash instead of a blank white screen, and the connect screen appears instantly (you can start typing a code to join before your own code has finished generating).
v1.1.0
DownloadJul 16, 202650 MB6 downloads
- Sending is instant messages appear the moment you hit send, even on a flaky connection
- Messages never jump or reorder while being delivered
- Chat stays pinned to the newest message incoming messages don't shove the screen around
- New "↓ new" pill when messages arrive while you're scrolled up; auto-follows near the bottom
- Read receipts fixed: never stuck on one grey tick, only sent while the chat is on screen
- Typing indicator no longer gets stuck or shows phantom "typing…"
- Ending a session is instant even offline and exits cleanly for both people
- Keyboard stays open after sending, so you can rapid-fire messages
- Kicked out by a crash? Re-enter the same code and you're back in
- Ending a long conversation now reliably deletes every message
vv1.0.1
DownloadJul 15, 202650 MB12 downloads
- Anonymous by design no login, no sign-up, no personal info
- Code-based sessions: get a code, share it, connect instantly
- Real-time 1-to-1 messaging
- Live typing indicator and read receipts (sent / read)
- Ephemeral: end a session and the whole conversation is deleted for both
- Reliable message order via server timestamps
- Minimalist black & white interface (light & dark)