Viltri helps you plan trips and check the weather along the way. It is published by Azimuth Media Group LLC. This policy says what the app does with your information, which outside services it talks to, and what each one receives.
Trips and watched places also sync through your iCloud account — see iCloud below.
With your permission, Viltri uses your device’s location to show the weather where you are and to check for severe-weather alerts there. It also uses the locations of your trip stops and watched places. The app does not keep a history of where you have been.
In the background. Viltri’s Severe alerts and Advisories settings are on by default. While either is on, iOS periodically wakes Viltri to check the US National Weather Service for active alerts at your most recent location, your trip stops and your watched places. Viltri only has access to your location while you are using it, so the background check uses the last location the app saw rather than tracking you. The check goes straight from your phone to the National Weather Service; no Viltri server is involved. Notifications are created on your phone — there is no push server. Turning both Severe alerts and Advisories off in Viltri’s Settings stops these checks. If Daily forecast or Pressure alerts is on, the same background check also fetches the forecast for your most recent location, from the same weather services, to write the morning notification and watch the station pressure readings. If Flight delays is on and a trip has a flight today or tomorrow, it also downloads the FAA’s nationwide airport status, which carries nothing about you; the airports are matched on your phone.
Widgets fetch the forecast for their location from the National Weather Service on their own schedule, the same way.
Each request below goes from your device directly to the service named. Like any internet request, it reaches that service from your device’s IP address; Viltri adds no identifier of its own. Requests to the National Weather Service and the FAA carry Viltri’s contact address (hello@viltri.com), because those agencies ask apps to identify themselves — not anything about you. The radar-tile reads described under the Iowa Environmental Mesonet, and the typical-temperature requests to NASA, carry it too.
| Service | Used for | What it receives | Their policy |
|---|---|---|---|
| US National Weather Service | Forecasts, expected rain amounts, current conditions and severe-weather alerts in the US; also used by the widgets and background alert checks | The coordinates of the place being checked | weather.gov/privacy |
| MET Norway (Norwegian Meteorological Institute) | Forecasts outside the US, or when the National Weather Service is unavailable; the height of the land for the Today picture, anywhere | Coordinates, rounded to four decimal places (about 10 m). For the Today picture, once per place: the place, rounded to about 1 km, and eight points about 20 km around it | met.no privacy |
| NOAA — Climate Prediction Center, nowCOAST, National Centers for Environmental Information, Aviation Weather Center | Extended outlooks; radar and forecast map layers; “Today in History” records; airport weather (METAR) for flight legs | Coordinates for the outlook; the area of the map on your screen for map layers; coordinates rounded to about 100 m, or a weather-station ID, for historical records; an airport code for airport weather | noaa.gov privacy |
| NASA — GIBS and POWER | Satellite imagery outside the US; UV index and historical temperatures; a place’s long-run climate for the Today picture; the temperatures typical for a trip stop that is too far ahead to forecast | The area of the map on your screen for imagery; coordinates for UV and historical data; the place, rounded to about 1 km, once per place for its climate; for a far-off trip stop, the stop’s coordinates, rounded to about 1 km, once for each area of about 50 km, then kept on your device | nasa.gov/privacy |
| Iowa Environmental Mesonet (Iowa State University) | US radar map tiles, and the next six hours of NOAA’s radar forecast; also, on the Maps tab, the radar tiles around your location, which Viltri reads on your device to say where heavier rain is | The area of the map on your screen; and, for the sentence about heavier rain, the map tiles that cover about 100 km around your location. Each tile is about 200 km wide, so asking for it shows roughly where you are. Viltri reads the tile’s colors on your phone and keeps nothing | IEM disclaimer |
| US Environmental Protection Agency | UV index in the US | A US ZIP code, worked out on your device from the location | epa.gov privacy |
| Federal Aviation Administration | Ground stops and delays for flight legs | Nothing about you — the app downloads the FAA’s nationwide status feed | faa.gov/privacy |
| adsb.lol (community flight-tracking network) | Live aircraft on the Flights map | The map’s center, rounded to four decimal places, and a search radius; or a flight number or aircraft registration you type; for a flight you track, its aircraft’s transponder address, to draw the path it has flown | adsb.lol (no separate policy published) |
| adsbdb | The route of a flight you tap or track | The flight’s callsign | adsbdb.com |
| Planespotters.net | A photo of the aircraft on the flight card, credited to its photographer | The transponder address of the aircraft you tap or track; then the photo is downloaded from the address Planespotters.net returns. The photo is kept in memory only while the card shows it | planespotters.net privacy |
| Apple | Maps; place search, place names, ZIP codes and time zones; the surroundings of a place for the Today picture; voice trip entry (see below); iCloud sync; purchases | The area of any map on your screen; text you type into place search; coordinates to look up a place name or ZIP; when you import from your calendar, the places it names (see Calendar); when you import from a screenshot, the place names it shows that have no airport code. For the Today picture, once per place: the place, rounded to about 1 km, and points around it (eight at 4 km for water, eight at 1.5 km for nearby places), and a map image of the 12 km around it to find lakes | apple.com/legal/privacy |
| Viltri — records.viltri.com and edge.viltri.com, hosted by Cloudflare | “Today in History” weather records; short links for shared trips | Nothing about you for records (the app downloads public station files); for a share, only the encrypted trip (see Trip Sharing) | cloudflare.com privacy |
None of these services receives your trip names, your preferences, or anything that identifies you by name.
If you speak a trip, Viltri asks for microphone and speech-recognition permission. On devices and languages that support it, recognition happens entirely on your phone and the sheet says “Transcribed on this device.” Where on-device recognition is not available, iOS sends the audio to Apple’s speech-recognition service to be transcribed, under Apple’s privacy policy. Viltri keeps no recording.
Import. If you choose Import from Calendar, Viltri asks for calendar access and lists your events, starting from the date you pick, on your device, so you can add them as stops. It reads each event’s title, location, dates and notes on the device to find flights and places, and the list shows under each event the place or route it read.
Only for the events you tick and add, text is sent to Apple to find places on the map: the event’s location; or, for a flight, the names of the airports or cities in its route; or the place its title names; or, if the event has no location and names no place, its title, to see whether it is one. Nothing else from your calendar leaves the device.
Export. Adding a trip to your calendar creates a standard calendar file on your device with the trip’s name, dates, stops and legs. It goes only to your calendar app.
If you share a confirmation email or message to Viltri from another app, it is read on your device to find the stops. Nothing is uploaded.
If you choose Import from Screenshot, you pick one image in the iOS photo picker; Viltri sees only that image, not the rest of your photos. iOS’s text recognition reads the text in it on your device, and Viltri finds the flights in that text. The image and its text are not uploaded and are not kept. Airport codes are looked up on the device; a place named without an airport code is sent to Apple to find it on the map.
If your device is signed in to iCloud, Viltri syncs your trips (with their stops and legs) and your watched places through Apple’s CloudKit, so they appear on your other devices. The sync is between your own devices and is held in your private iCloud database under Apple’s privacy policy; we cannot see it. Viltri has no setting of its own for this: to keep trips on one device only, turn off iCloud for Viltri in the iOS Settings app.
When you share a trip, Viltri packages the trip name, stops (with their locations rounded to four decimal places), dates and leg types, and:
#. Browsers never send that part of a link to any server.Opening the link fetches the encrypted copy and decrypts it in the recipient’s browser. The weather shown is then fetched by their browser directly from the US National Weather Service. If your phone cannot reach edge.viltri.com when you share, the app makes a longer link that carries the whole encrypted trip inside the link itself and stores nothing anywhere.
The link works on any device — no account or app needed. Anyone who has the link can open it, so share it as you would share the trip itself.
Viltri Premium is sold through Apple’s App Store. Apple handles payment; the app only learns whether you have an active subscription. We never see your card, billing address or Apple Account.
There is no advertising network in Viltri. The free plan shows a bar inviting you to try Premium; it is part of the app and sends nothing anywhere. Viltri does not track you across apps or websites, does not read the advertising identifier, and contains no analytics or crash-reporting code. If that ever changes, this policy and the App Store privacy disclosure will be updated before the change ships.
We keep no location history, no log of your trips and no weather history about you on any server.
Viltri is not directed at children under 13 and does not knowingly collect information from them.
If we change how Viltri handles information — for example by adding a data source — we will update the date at the top and say what changed here.
October 15, 2026: for Viltri 1.6. Added the flight card on the Flights map, with a photo of the aircraft from Planespotters.net, which receives the transponder address of the aircraft you tap or track. Corrected the adsbdb row: the route lookup has always been made for a flight you tap as well as one you track, not only a tracked flight.
October 5, 2026: for Viltri 1.5. Added the Trip Now widget and activity advice in the weather widget. They use two things Viltri now copies into the storage it shares with its own widgets, on your device only: the activity you chose in Settings, and the trip you have open (its name, stops, dates, the weather shown for each stop and the warning shown for each leg). Nothing new is sent anywhere: the widgets’ forecast requests to the National Weather Service are unchanged, and the sun’s and moon’s positions are worked out on the device.
October 3, 2026: for Viltri 1.4. Added typical temperatures for trip stops that are too far ahead to forecast, which ask NASA POWER for the stop’s area; reading a calendar event’s title, location and notes on your device to find flights and places, with the places it finds, or an event’s title when it has no location, sent to Apple to look up; and importing a booking from a screenshot, which is read on your device.
September 29, 2026: for Viltri 1.3. Added the expected rain amounts on Today, which come from the National Weather Service’s forecast data (and MET Norway’s outside the US), and the reading of radar tiles around your location on the Maps tab, which asks the Iowa Environmental Mesonet for the tiles that cover about 100 km around you.
September 28, 2026: for Viltri 1.2. Added the Advisories alert setting; the forecasts, skies and place profiles now kept on the device; and what MET Norway, NASA and Apple receive to work out the picture on Today, which is asked for even where the National Weather Service provides the forecast. Also added Apple’s maps, the radar forecast from the Iowa Environmental Mesonet, the flight-path lookup for a tracked flight, the background forecast fetch behind the Daily forecast and Pressure alerts notifications, and the FAA status check behind Flight delays.
September 24, 2026: rewritten to list every service the app contacts and what each receives. The previous version still named Open-Meteo and RainViewer, which the app stopped using in August 2026, and omitted MET Norway, NOAA’s other services, NASA, the Iowa Environmental Mesonet, the EPA, the FAA, the flight-tracking services, voice entry, calendar import and background alert checks. It also described an in-app iCloud switch and a 48-hour limit on notification records that the app does not have, and a review of usage patterns the app has no way to perform.
Email: hello@viltri.com