Your women.
Your shield.
Somewhere to talk to your women every day, away from men. Messages, voice notes and the groups of your own city, every account vouched for, and the women of your region warning each other about the street you are about to walk down.
- Messages and voice notes
- Your city, and its alerts
- Women only, no exceptions
- Walk With Me
- Silent SOS
- Fake call
- The Shield
- 1 in 3
- Women face violencein their lifetime, WHO
- 0
- Women-only comms appswith a safety layer built in
- 81%
- Feel unsafe alonewalking after dark
The women already on it.
Not a safety app you install and forget. A place your people are, on an ordinary Tuesday.
Walking home from the late shift
The group chat that is not on WhatsApp
Checked his number before she went
The app you open every day.
Siren is where you talk to your people, and where your region tells you what happened last night. The safety features sit underneath, one gesture away, for the night you need them.
Talk however you talk
The reason you open Siren every day. Type it, or hold the button and say it when typing is not enough. Everything expires after 24 hours by default, so nothing incriminating survives on a phone that gets searched. The timer is yours.
Only women, accounted for
Every account traces back to the member who vouched for her, or to the three who agreed to let her in. You can see the codes you have left and who used them, and ask for more when they run out — a woman reads the ask, not a counter.
Silent SOS
Hold the button and your live GPS goes to your trusted circle while nothing changes on screen. It can start a silent recording at the same time, encrypted before it leaves your phone.
Triggering it by volume press needs a native app, so for now it is a gesture on screen.
Everything a message should be
Text, voice notes, photos, video, files, GIFs, reactions, replies and polls. A letter from a lawyer can live somewhere he cannot reach rather than on the phone he can take. All of it encrypted end to end, so Siren stores what it cannot read.
Groups, by invite
Private groups for your friends, and public ones pinned to your city, your region or your country. You can see the public ones. Getting into a group somebody made still takes an invite from inside, because a group anyone can walk into is a group a man can walk into.
Your city, in one place
A community gathers the groups of a place under its own name: the neighbourhoods, the late shifts, the school run. Every region is open to you, and one switch silences a whole place. You are in one if you are in one of its groups, so no list of who belongs to a city exists.
What is happening on your street
Every community has one room only for warnings: a man following women off the last bus, a light out over a car park. Each is its own conversation — other women answer it, or say they saw it too. Muting never reaches this room, and a warning stays three days.
A lock for the person beside you
Six digits in front of Siren, asked when it opens and after it has been out of sight — how long is yours to set, including never. The code is checked on this phone and never sent anywhere, and ten wrong tries end the session rather than lock you out.
Face and fingerprint need a phone that offers them, and Siren says whether yours does rather than letting you assume it.
A cover that works
Install Siren as a calculator or a notes app and that is what it is on your home screen, and what opens when someone else taps it. The calculator calculates and the notes save. Your code gets you past it.
The name and icon come from what you installed, so changing cover means removing Siren from your home screen and adding it again.
Safe word
Say your phrase naturally in a voice message and Siren raises the SOS silently. Nothing on screen changes and the message still sends normally, so the room you are in learns nothing.
Needs a browser that can transcribe speech, which iPhones do not. Siren says so rather than letting you rely on it.
Shake to record
Shake the phone hard three times to start a silent recording, encrypted before it leaves your hand. Nothing appears on screen, and it cannot be deleted from the phone that made it.
Needs a phone that reports movement, and Siren tells you whether yours does.
Fake call
It rings and vibrates like a real call, from a name you choose. Answer it and a voice speaks out loud, so anyone near you hears a conversation rather than silence. Arrange it for a few minutes later and it arrives with Siren closed.
Calling your circle
A real voice call, one to one. The audio goes straight between the two phones and is encrypted between them, so it never passes through Siren at all — there is nothing on our side to hand over.
On some mobile networks two phones cannot reach each other directly and the call will not connect. Siren says so instead of showing a timer counting nothing.
Your account on a second phone
Point the new phone at a square on the old one and it is yours too, without spending a recovery code. Each device has its own key, so a message is encrypted for every phone you hold and for nobody else's, and a device you have lost can be dropped from the account on its own.
Safety map
Where women have raised an alert near you, as distance and direction you can act on. An area appears only once three different women have alerted in it, so no single woman's night is ever a dot on a map. Contributing your own is off until you turn it on.
Walk With Me
Share a live trip and she sees your route as you move. If you stop for too long, leave the path, or your phone dies, she is told automatically, with the last place you were known to be.
She can see you the whole way home.
Start a trip and a friend watches your route in real time. Stop moving, leave the path or lose battery, and she is told where you were last.
Try Walk With Me
Nobody walks in.
Anyone can download Siren. Almost nobody gets past the door. Getting in takes a member who will vouch for you, or three who will listen to you.
- Step 1
An invite from a member
The fast way in. The code stays attached to the woman who sent it, so vouching for someone means something.
- Step 2
Or three members hear you
No invite? Record a short answer. Three members in your timezone listen, so somebody is awake — and while Siren is this small, its three founders listen instead, because three members cannot sit on a panel that does not exist yet.
- Step 3
They never learn who you are
The panel is told a city and nothing else. No name, no photo, no age. You never learn who they were either.
- Step 4
Unanimous, or it escalates
Three yeses and you are in. One no goes to a human reviewer. Two or more and you will need an invite instead.
No invite? Ask to join.
Record a short answer, about thirty seconds, in your own voice. Whoever decides hears that and the name of a city — never your name, never your number. Siren opens by itself the moment the answer comes.
What the panel is not
It is not a panel judging whether you look like a woman. That would fail the women who need Siren most. It is three members asking whether the person answering is here for the reasons Siren exists.
Sitting on panels is optional. You are asked once, you can say no, and nothing about your account changes.
The Shield
She files it once. The women who need it are told.
A woman reports a man by phone number, in her own words. The report carries a date, a location, and an account that someone vouched for. Any woman who already has that number in her contacts sees a private alert. There are no public profiles, and no way to search by name.
Uncomfortable experience
Persistent unwanted contact, boundary violations, controlling behaviour. First-person testimony only. Several independent reports raise the tier.
Felt in danger
Stalking, threats, physical intimidation, coercion. The report needs a date, a location and context. Evidence can be attached.
Police report filed
She states that a formal police report or a restraining order exists, and gives the case number. A moderator reads it before another woman sees it. This triggers the strongest alert Siren sends.
How your report stays private.
Six things that are true of every report on Siren, so that telling the truth never costs you anything.
- 01
You write what happened to you
In your own words, in the first person. Siren won't let you post claims about who he is, only about what he did to you.
- 02
Nothing about it is public
There is no profile, no name and no photo. A report attaches to a phone number and nothing else.
- 03
Only women who already have his number see it
A report reaches a woman with him in her contacts. It cannot be browsed, and it cannot be searched.
- 04
He never learns who filed it
Your account traces back to the member who vouched for you, so a false report costs her too. Your identity is never shown to the man you reported.
- 05
Serious reports are read by a person
Anything above L1 goes to a human moderator before another woman ever sees it.
- 06
Your words cannot be quietly removed
Reports are stored where speech protections are strongest, so nobody can pressure them off the record.
Everything, free, for every woman.
There is no paid tier and nothing held back for one. Every feature is free, with no ceiling to run into. What pays for Siren is the institutions that owe women a duty of care.
Siren
Free
Always, for every member. No card, no trial, no ceiling.
- Unlimited messages, voice notes, photos, files and groups
- Every community in the country, and the groups inside them
- Neighbourhood alerts from any place you choose to hear
- Silent SOS with live location, and a silent recording
- Fake call, and the covers that hide the app
- Unlimited Walk With Me trips
- The Shield, searching and reporting
- A six-digit lock, with your face or fingerprint
- Your account on more than one phone
- Messages that expire on your timer, up to 72 hours
- End-to-end encryption on all of it
Siren for institutions
Custom
Institutional duty of care.
- Universities, for campus safety integration
- Employers, for travel and late-shift cover
- NGOs working on domestic violence
- Onboarding for your whole cohort at once
Install it from your browser
Siren is in no app store, and that is deliberate. A store install is a permanent record in an account somebody else may be able to open — a shared Apple ID, a partner who checks a purchase history. No cover story inside an app can hide a row that lives outside it.
The step-by-step guide →Open it on the phone you carry
Installing is something you do from the phone itself. Point its camera at the square, or type the address in.
mysiren.app
Nothing in a store account
No purchase history, no download to explain, nothing on an account shared with family. Delete the icon and it is gone, and clearing your browsing data takes the rest.
Every woman who joins makes every other woman safer.
Free forever, for every woman here.