Fontainebleau forest · pilot area
Sylvor brings the map, GPS, compass, a breadcrumb trail, the weather, a logbook and practical guides to your phone. No account and no server: your data stays on your device.
Early version: the content is deliberately limited, see what to know. The app itself is currently in French only.
Every feature below is present in the app. Their limits are stated, not hidden. The app's interface and survival content are in French.
Your position on an OpenStreetMap base map, with the signal accuracy and a compass. If the GPS is lost, the last known position is shown as such, with its age, never as your current position.
You know where you are and how reliable the measurement is.
Open the mapOne button records your track. A banner stays visible (distance, duration, GPS accuracy, battery) and the dashboard shows average speed, altitude and positive and negative elevation. Tracks can be exported as GPX.
You follow your outing and keep your track in a standard format.
Start a hikeA long press on the map adds a point (place of interest, water, hazard, bivouac, fire, remarkable tree, vehicle, shelter) with a name, note and photo. During a hike, a photo also records its position, altitude, time and the cached weather.
Your journal becomes a geographic memory of the outing, stored locally.
See the journalPick a target: water point, landmark, starting point, last known point or one of your own points. Sylvor continuously shows the distance, the bearing and an estimated walking time, with an arrow that follows the compass when it is available.
A clear direction to your car, your bivouac or a spring. Note: this is a straight-line bearing, not a route along trails.
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Open-Meteo forecasts with thunderstorm, fog and frost alerts, sunrise and sunset times and the time left before nightfall. Offline, the last known weather stays displayed and is flagged as offline.
You keep an eye on the weather and on when the sun sets.
See the weatherA starter set of illustrated guides, written in French: 5 techniques (water, fire, shelter, navigating without GPS, getting lost), 5 first-aid sheets, 4 tree sheets, checklists and a 6-question quiz. Text-to-speech is available.
The essentials readable without a network. Sylvor never guarantees that a plant is edible.
Read the guidesDirect dialing of the French emergency numbers (112, 15, 18, 17 and 114), sharing your position, a light and sound SOS, battery level and a safety check-in with an expected return time. 112 works across the European Union.
Critical actions are one tap away. The check-in and the SOS are local aids: no message is sent to anyone automatically.
See the Emergency screenA hiking notebook with position, weather and tags, optional encryption entry by entry (the password is never stored), a full JSON export and printing to PDF.
A memento of each outing that you keep. Photos are not included in the JSON export.
Open the journalReal screenshots of the interface, unedited, taken in an emulated mobile browser with a simulated GPS position. The interface is in French.
Go to sylvor.swinux.ch in your browser. No sign-up and no account.
Open the app once with a network connection so that its content is kept on your device. You can also add it to your home screen if your browser offers it.
No permission is requested at startup: position, compass and notifications are only requested when a screen needs them. If you refuse, the rest of the app remains usable.
Start a hike, navigate to a point, add photos and notes, or open a survival guide. Everything is saved on your device.
Map, compass, weather, practical guides and emergency tools in a single app, instead of juggling several.
A stale position is flagged as such, cached weather is marked offline, and unverified sample points are identified as such in the data.
No account, no Sylvor server, no tracking: track, points, photos and journal are stored locally on your device.
Light, dark, high-contrast and red-light themes, glove mode, a colour-blind-friendly palette, adjustable text size and a battery-saving mode.
Open the app, allow location when it asks, and set off with a map, a compass and practical guides in your pocket.
Discover Sylvor