The network we weave together.
SentinElles is the mutual-aid app for women on the move. It draws on women's collective intelligence to make every journey calmer — with no profile and no history kept.
A massive issue, concentrated in public transport.
Beyond the street, it is in the Paris region's public transport that women are most exposed: the network, more than any other public space, concentrates the heaviest share of recorded gender-based and sexual violence. SentinElles starts from this fact.
Sources: MIPROF, French National Observatory on Violence Against Women, RATP-Enov (2022-2025).
of victims of sexual violence on public transport are women
only file a complaint — most of it stays invisible
Every step of the journey, in your hand.
On your phone and on your wrist.
iPhone, Android, smartwatch: the danger alert reaches you where you're already looking — no need to pull out your phone.
Built by and for women.
SentinElles is not a surveillance system. It's a living network, woven by its users, to feel supported in their everyday journeys.
Women's collective intelligence
A network woven by the users themselves. Ground knowledge comes from them, journey after journey.
Mutual aid, not fear
A product and a message designed to reassure, at every step of the journey.
Human verification
Every entry is validated by a sponsor or by the team. The community stays protected, profiles stay anonymous.
Designed for the real journey.
Six mechanisms that support every step of a journey, from departure to arrival.
A sponsor you trust
Matched with a verified sponsor or sponsee — the heart of the mutual-aid system.
“The calmest”
A route designed to avoid risk zones, not just the fastest way.
Real-time tracking
The whole Paris-region network integrated, connected to public-transport data (IDFM).
“I'm here” mode
Chat anonymously with other sentinelles nearby, whenever you want.
Verified reports
Reported, confirmed, resolved. A life cycle that makes the map reliable, zone by zone.
Post-journey check-in
A mood check after each run. Because well-being matters too.
A network woven by trust.
The identity-verification flow to enter SentinElles.
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1
Two ways in
Be invited by a trusted friend who becomes your sponsor, or join directly through the app.
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2
ID and selfie
Each member submits an ID document and a photo. Facial recognition makes the first match.
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3
Final human check
The final verification is always done by a person — the sponsor, or failing that the SentinElles team.
No profile, no trace.
An architecture designed for GDPR from the very first line of code, not bolted on afterwards.
No persistent profile
No individual location history. Only anonymized aggregates feed the analytics.
Anti-abuse algorithm
The matching system detects and prevents misuse or coordinated malicious activity.
GDPR-native
Architecture built in-house: FastAPI, PostGIS, BigQuery, React Native, GCP.
Limited risk surface
No sensitive database of individual movements to secure over time. No advertising, no data sales.
For local authorities, companies and associations.
Residents' well-being, at the scale of your territory
For cities, départements and regions: a concrete service for residents' well-being, plus mobility reports and analyses produced from our data. A “data for good” building block for your gender-equality and mobility policies.
The commute, made safer
A natural extension of your CSR and workplace-wellbeing commitments. Safer routes, mutual aid between colleagues, a turnkey pilot with an internal communication kit.
A concrete tool for the field
SentinElles complements, without ever replacing, the fieldwork of associations. Free access for your beneficiaries, co-design workshops, a ready-to-use outreach kit.
Download the app.
Pick your platform — both links work as of today.
iOS
iPhone and iPad, via TestFlight. Install the free TestFlight app first, then open the link to join the beta.
iOS · TestFlight →Android
APK file, Android 8 and up. Allow “install from unknown sources” before opening the file.
Android · APK →
“Running alone in public space, I realized I was living an experience shared by many women. That's where SentinElles was born: a tool I wish I'd had, a community I wish I'd found.”
Luiza Nogueira Drummond, co-founder & CEO of SentinElles.
Support SentinElles ♥
Our project lives thanks to your donations. Every contribution funds development, hosting and support for the women who use SentinElles.
DonateBy donating, you accept our Donation Terms. No counterpart · No tax deduction at this stage (the association is not recognised as a public-interest organisation).