Tonight's verdict
Get a one-line "worth stepping outside / wait / stay in" answer in seconds, with its score, level, and reasons.
Composite sky timeline
Cloud cover, moon rise and set, and galactic-core altitude share one 18:00–06:00 timeline, so the window where they agree is circled for you.
Departure quick check
Where to look: azimuth and altitude. What to wear: feels-like temperature and wind. What to bring: equipment hints and an exposure starting point.
Heading compass
Open the compass to read device heading and point out the galactic-core direction. Heading is read only while the compass screen is open and is never written to disk.
Events and upcoming windows
Compare meteor showers and new-moon or full-moon dates against the next several nights so you can plan further ahead.
Places, cache, widgets
Save several observing places; weather cache is kept for 24 hours; the lock-screen or home-screen widget and Apple Watch share one summary.
Who is this for?
From one hesitation to one clear action
Deciding after dinner
Open the app, read tonight's verdict and best window, then decide what to wear and when to head out — no astronomy background needed.
Photographing the Milky Way
Check the galactic core's azimuth and altitude, take an exposure starting point, then tune it for your own camera and lens.
Camping or a family trip
Compare the next few nights and the upcoming events, pick the better evening, and keep the reminder local to your device.
Weak network or no weather data
The astronomy side is calculated offline on the device, so window, Milky Way, and moon phase remain available. Cloud cover is marked as unavailable, and a demo curve is labelled "demo data".
Frequently asked
Data, privacy, and limits
Does it guarantee I will see something?
No. It organizes weather and astronomy facts; it does not promise transparency, seeing, or visibility, and it does not make safety decisions.
Do I have to enable location?
No. Only when you explicitly choose "Current Location" does the app take one foreground location fix and use Apple's geocoding service for the place name. You can skip location or add a place manually.
Is any data uploaded?
There is no developer server, account, cloud sync, advertising, analytics, or tracking. Coordinates for a selected place, including one added manually, are sent to Apple WeatherKit for weather; only choosing "Current Location" triggers one foreground location fix and the Apple geocoding lookup. Places and the weather cache stay on this device.
Does it cost anything?
The current release is free, with no account, in-app purchase, subscription, paywall, or advertising.
Are the numbers on screen real?
Astronomy results are calculated on the device with a simplified model, and weather comes from Apple WeatherKit. When weather is unavailable and you turn on the demo curve, the interface clearly labels it as demo data.
How do I delete local data?
Delete a single place in Places, or use "Reset all data" in Settings to clear places, settings, cache, and notifications.
Official information and support
See the permission explanations, privacy policy, terms of use, support path, and local data boundary.