Nightwatch: Clear Sky Alerts

Nightwatch tells you whether tonight is worth setting up the telescope, and speaks up when it is. When tonight looks clear for long enough, it sends a heads-up before sunset, then a nudge just before the clear spell begins. If the forecast turns, it tells you. Open it to see a sky score, the clear window, cloud by hour, darkness, the Moon, seeing, wind, dew risk and transparency, and the best targets for your telescope's field of view tonight. • Two forecasts compared: Apple Weather, with Open-Meteo as a second opinion, and 7Timer for seeing • Targets chosen for your telescope, with "How to shoot this" on every target: filter, exposure and frames • Tonight's plan: your favourites in the order of their best time • Darker skies nearby, scored for tonight • Your own horizon: mark what blocks your sky, or measure it from a photo • Aurora alerts for your site, wherever you observe from • Tonight's events: the Moon passing in front of a star, comets and the space station • Small, medium and large Home Screen widgets, and a Lock Screen card when a clear window opens • Spotlight and Shortcuts actions, and on iOS 27 Siri search for any target • A red night mode that keeps your eyes dark-adapted • Shares your sites and settings with the Nightwatch Mac app through iCloud No accounts, no advertising and no tracking. Nightwatch is open source.