# ASGuide — Astronomy Sky Guide

> Astronomy sky guide for discovering celestial objects visible from your location. (iPhone/iPad app by Philip Perez.)

- Source: https://appshunter.io/ios/app/asguide/id1500363899 (this page in markdown: same URL + `.md`)
- Developer: [Philip Perez](https://appshunter.io/developer/1500363898)
- Category: Education
- Price: Free
- Rating: 4.80/5 from 9 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 33 MB
- Languages: American English
- Released: 2020-03-10
- Data updated: 2026-09-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/asguide/id1500363899/reviews.md

## What is ASGuide?

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.

## Key features

- Discover celestial objects visible from your location
- Generate custom viewing lists
- View detailed observation information
- Interactive sky atlas preview
- Dark mode for nighttime viewing
- Sunrise/sunset and moon phase dashboard

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/asguide/id1500363899/reviews.md

### 5/5 — Wonderful!

*2026-04-11*

I forgot I had this app. The easy integration of the various sections of data is good. For its convenience in a small size footprint, the details zooming in on the images is surprising. Unfortunately they don’t have a real website. They use Facebook. I don’t and won’t. Social media has brought ills on the under 30 year olds.

### 5/5 — Great App

*2020-11-06*

Perfect for astrophotography and selecting targets. Love the favourites feature. Would be cool to submit user photos of objects

### 4/5 — Beautiful App!

*2020-10-26*

This is a beautiful, stable, well-organized, and easy to use app that helps me plan my skywatching sessions.

It reports the current lunar phase and lists notable deep sky objects on display based on your location. This is a big help as I choose Messier objects to check off my list. 

I like this app so much that I’d like it to do even more to help me plan my viewing. For example, it would be helpful to include solar data (sunrise/sunset), planetary data (where are the “wanderers” this evening), meteor showers, and other celestial events—e.g., conjunctions. 

Even as-is, this is a high quality app. It is easily worth its current low price, and I would pay $10 for an equally well-designed app that incorporates additional information.

**Developer response:** Thank you so much for your feedback! It's been invaluable as a guide of what features to add next. In fact, an upcoming update will include solar and planet info. And definitely researching how to include the rest!

### 5/5 — Impressed!

*2020-07-30*

Fantastic app! Very impressed. Especially since it is free. This is what I needed for planning my observing sessions. Thank you!

## Frequently asked questions about ASGuide

### What celestial objects can ASGuide show me?

ASGuide displays planets, galaxies, nebulae, galactic regions, stars, and star clusters that are visible from your current geographic location.

### Can I use ASGuide to plan my stargazing sessions?

Yes, ASGuide allows you to generate viewing lists filtered by observation times, magnitude, altitude, constellations, and object type, helping you plan your sessions.

### Does ASGuide work from anywhere in the world?

Yes, you can select a custom location to discover the celestial objects visible from any point on Earth.

### What kind of information does ASGuide provide for celestial objects?

For celestial objects, ASGuide provides detailed observation information, including rise-transit-set times and characteristics.

### Does ASGuide have a feature to preview objects?

Yes, ASGuide includes a high-resolution, full-color interactive sky atlas to preview any celestial object in its catalog.

### Is ASGuide suitable for nighttime use?

ASGuide features a dark mode design specifically for nighttime viewing, and it also supports light mode on iOS 13 and later.

### What is the update frequency for ASGuide?

ASGuide was last updated on January 6, 2023, with version 1.1.2. The update frequency is not explicitly stated but indicates ongoing support.

### Does ASGuide have ads?

No, ASGuide is ad-free, allowing for an uninterrupted stargazing experience.

## Version history (last 5 releases)

### 1.2.0 — 2026-08-28

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.

### 1.1.2 — 2023-01-06

Bug fixes:
i. Resolved an issue where some locations were placed at an incorrect timezone.
ii. Fixed a crash bug in settings.

### 1.1.1 — 2021-12-28

- Fix issue with civil twilight always appearing in solar status.
- iOS 15 bug fixes

### 1.1 — 2021-08-23

- Planets! ASGuide now includes expanded information on the sun, moon, and planets. 
- List of visible planets and their locations in your night sky.
- Solar info section on the home screen, including sunset and sunrise times, and current twilight. 
- Configure the home screen (add/remove sections).
- Bug fixes and performance improvements.

### 1.0.5 — 2021-04-04

Fix for crash on home screen.

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## Related topics

[messier](https://appshunter.io/ios/topics/messier)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*