ASGuide
Astronomy Sky Guide
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Discover the wonders visible in your sky tonight.
ASGuide (Astronomy Sky Guide) turns your location and observing time into a personal guide to the night sky. Discover visible planets, galaxies, nebulae, stars, star clusters, and galactic regions. Plan an observation, explore from home, or find your next celestial target.
Find objects worth viewing and learn more about every discovery:
- See what is visible from your location and when to observe it. View rise, transit, and set times.
- Filter by magnitude, altitude above the horizon, constellation, object type, and more.
- Search by common name, catalog number, constellation, object type, or detailed classification.
- Browse the solar system and deep-sky categories.
- Return quickly to recent searches and recently viewed objects.
- See which planets are visible.
- Save favorite objects for future viewing.
- Use your current location or select any location on Earth.
- Check sunrise, sunset, twilight, and night times.
- Follow the current moon phase, illumination, moonrise, moonset, and the next new and full moons.
- Open high-resolution imagery and explore objects with the interactive sky atlas.
Customize the Home screen with the information that matters to you. Use the dark appearance for nighttime observations, or the standard iOS appearance.
Your next night-sky discovery starts with ASGuide.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Version 1.2 is a major update to ASGuide:
- A new, modern design under the hood with Liquid Glass updates for iOS26+
- The new Explore tab searches the solar system and deep-sky catalog from one place.
- Search by name, catalog number, constellation, object type, detailed classification, or morphology.
- Browse object categories and return to recent searches and recently viewed objects.
- Search within Tonight’s Sky while keeping your location, observing time, and visibility filters.
- Add favorites directly from search results.
- Smoother navigation and many reliability and visual improvements.
The developer, Philip Perez, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Philip Perez
- Size
- 35 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Philip Perez