Frequently Asked Questions

Juliapp is a community safety network that lets you report incidents, stay informed about what is happening around you, and help each other — all in real time. Think of it as a living safety map powered by the people who use it.

Yes. Juliapp is entirely free: every feature is available to every user at no cost. There is no subscription, no in-app purchase and no advertising.

Juliapp works worldwide. You can report incidents and view the safety map from anywhere. Transit routing is currently available for Paris (powered by IDFM Navitia). Walk, bike, and drive routing works everywhere via OSRM.

Juliapp is a Progressive Web App (PWA), which means you install it directly from your browser — no app store needed. Once installed, it works just like a native app with its own icon, full-screen mode, and offline support.

Julia is the assistant built into the Juliapp app. She can answer questions about safety around you, help you plan a journey and carry out actions in the app for you. Julia’s replies are generated by Claude, an AI service from Anthropic. Nothing is sent to Anthropic until you have given your permission on a dedicated screen, and you can withdraw it at any time in Settings → Julia. Details are in section 4 of our Privacy Policy.

Tap the + button on the map, fill in the details (type of incident, description, severity), and submit. Reports also work offline — they are queued and automatically synced when you are back online.

Your report appears as a pin on the map visible to nearby users. Other people can confirm the incident, add their own stories, or follow it for updates. The more confirmations a pin receives, the higher its trust score.

Other users only ever see your display name, which you choose freely: your real name is never shown. Identity verification takes place once, when you open your account, through our provider Didit; Juliapp retains neither your identity document nor your name. No phone number is required.

The SOS button is an emergency broadcast feature. Press and hold it to activate. Once triggered, your live location trail appears on every nearby user's map, and your trusted contacts are immediately notified.

There is a countdown before SOS activates, giving you time to cancel. If it does activate by mistake, you can cancel it at any time from the active SOS panel.

Verification takes place when you open your account. After you give your explicit consent in the app, our provider Didit reads your identity document and compares it with a selfie in your browser; it takes about two minutes. Juliapp retains neither the document nor your facial image.

Juliapp collects your location (only while using the app), the reports you create, and basic profile information. There is no third-party tracking, no analytics scripts, and no advertising SDKs.

All data is stored on EU servers via Supabase (PostgreSQL). The infrastructure is fully GDPR compliant.

Yes. Go to Settings > Privacy & Data > Delete my account. This will permanently remove your profile, reports, and all associated data.

No. Never. Juliapp has no third-party analytics, no ads, and no data sales. Your data belongs to you.

Only essential cookies: authentication session, language preference, and theme preference. No tracking or marketing cookies. For full details, see our Cookie Policy.

Juliapp supports Touch ID, Face ID, and Windows Hello to confirm sensitive actions like changing your email or deleting your account. Biometric data never leaves your device. SOS is intentionally never gated by biometrics.

Enter your destination, choose a transport mode (walk, bike, drive, or transit), and view available routes with safety information overlaid. Start a guided trip and get real-time ETA, turn-by-turn directions, and safety alerts along the way.

For walk and bike modes, Juliapp checks whether your route passes through areas with recent incidents. If it does, the app suggests safer alternative routes so you can avoid those zones.

Transit routing currently supports Paris only, powered by the IDFM Navitia API. Walk, bike, and drive routing works everywhere in the world via OSRM. More transit cities are planned.

Yes. Tap the heart icon on any route card to save it to your favorites for quick access later.

Go to the Communities tab, browse or search for groups near you, and request to join. Community admins will review your request.

Yes. You can create a private safety group for your neighborhood, campus, workplace, or any other group. Invite members and manage the community from the admin panel.

Place notes are personal markers you can drop on the map. Long-press for 2 seconds anywhere on the map to create one. They are private by default — only you can see them unless you choose to share.

Yes. Reports created while offline are queued locally and automatically synced to the server when your connection is restored. The map and previously loaded data remain accessible offline as well.

Juliapp will prompt you to enable notifications when relevant. You can also manage them manually under Settings > Notifications. Note that SOS alerts are always on and cannot be disabled for safety reasons.

On iOS: Open Juliapp in Safari, tap the Share button, then tap “Add to Home Screen.”
On Android: Open Juliapp in Chrome and tap “Install app” from the menu or the prompt banner.
On desktop: Click the install icon in your browser’s address bar.

Julia runs on our servers, not on your phone, and works with text only: there is no voice or audio processing. When you write to Julia, our server sends your message, your recent conversation and the context described in section 4 of our Privacy Policy to Claude, the AI model of Anthropic, through its commercial API. Anthropic does not use this data to train its models and provides the same or equal protection as our Privacy Policy. Nothing is sent without your permission, and you can withdraw it at any time in Settings → Julia.