Privacy Policy

Overview

Astro Planner is an astrophotography planning app. Most features run on your device using astronomical math. Map tiles, cloud forecasts and aurora readings come from external services described below. We don't run our own backend.

Data Collection

Astro Planner does not collect any personal data. Specifically:

• No accounts or sign-ups — the app works without registration.
• No analytics or tracking — no SDKs for usage tracking, crash reporting, advertising IDs, or user identification.
• No advertising — there are no ads and no ad-related data collection.
• No backend we operate — we do not run any server that receives or stores your data.

Location

If you grant location permission, Astro Planner reads your coordinates to compute sun and moon positions, golden hour, Milky Way visibility, and to center the light pollution map on you. These calculations all run on-device; your coordinates never leave your phone for the astronomical math.

To display the name of your city in the app, your coordinates may be sent once to your platform's standard reverse-geocoding service: Apple Maps on iOS, Google Play Services on Android. This is the same call any maps or weather app makes; we don't receive or store the result.

Camera and Motion (Sky AR)

Sky AR uses your rear camera preview, motion sensors, and current GPS position to draw celestial directions. Camera frames and motion readings stay on your device. Sky AR does not record, save, or upload images, video, or audio. The camera and motion subscription stop when you leave Sky AR or the app becomes inactive.

If you tap Copy AR diagnostics, technical information is copied to your clipboard. The diagnostic text excludes GPS coordinates. Nothing is sent automatically; you decide whether to share it.

Network Calls

The app makes the following outbound requests:

• NOAA SWPC (services.swpc.noaa.gov) — fetched by the Aurora Tracker to display current and forecast Kp index. The request includes only your device's IP (standard for any HTTP call) and contains no personal identifiers. NOAA is a US government agency.
• Open-Meteo (api.open-meteo.com) — when cloud forecasts are enabled, the selected observing coordinates are sent to retrieve hourly cloud cover. This also applies to night-alert checks at the last observing location. The forecast is cached on your device. You can disable cloud forecasts in Settings.
• OpenStreetMap (tile.openstreetmap.org) — base map tiles for the area you view. Tile requests include the requested map area and your IP address, as with a standard web request.
• djlorenz.github.io — light pollution map tiles. Static images are served from GitHub Pages. Requests identify the map tiles being viewed and include your IP address.
• Apple Maps / Google Play Services — only when reverse-geocoding your coordinates to a city name (see Location above).

Astronomical calculations (sun, moon, golden hour, moon calendar and Milky Way), camera calculators and saved plans work without a network connection. Fresh forecasts and new map areas require internet.

Settings Storage

Your preferences, saved places, shoots, notes and camera rigs are stored locally on your device. Location may also be used for the external services described above. If you choose to share a shoot or add it to your calendar, the selected plan details, including its location and notes, are passed to the app or calendar you choose.

Children's Privacy

Astro Planner does not knowingly collect any data from anyone, including children under 13.

Changes

If this policy changes, the updated version will be posted at this same URL with a new Last updated date.

Contact

For questions about this privacy policy, write to us atcontact@d2vsolutions.com.