Universe2Go vs ASGuide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Universe2Go
Explore the night sky with an audio-visual guide. Use augmented reality with special glasses to overlay information onto the real stars, or use starmap mode for a limited experience. Features include constellation discovery, mythology stories, deep-sky object exploration, and quizzes.
- Augmented reality overlay
- Audio-visual sky guide
- Constellation discovery mode
- Mythology stories
- Deep-sky object exploration
- Night sky quiz mode
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This version of universe2go will get no more updates. Please install the new, improved universe2go+ app from the AppStore. universe2go is an audio-visual sky guide. universe2go has two modi: 1) Starmap-Mode: use this mode to run universe2go without the Astro-Glasses. This mode has limited functionality. 2) Planetarium-Mode: in conjunction with universe2go Astro-Glasses you experience the the starry sky in a complete new way with audio and augmented reality overlay. How does it work? In conjunction with the AR-Astro-Glassses (AR = augmented reality) you can see the night sky with all the stars AND at the same time you will see additional information about the stars and constellations. This way a symbiosis between the real sky and virtual graphics and text is created. universe2go will use the sensors of your smartphone to generate the corresponding information for the exact spot of the sky that you are looking at. Maybe you are already familiar with some other starmap apps which can do this also (and some claim to do augmented reality, but fail since the smartphone camera is not capable of night sky imaging). But universe2go is very different!!! 1) universe2go uses a special algorithm and heuristics to identify the star you are looking at with high reliability. (feel free to compare this with other apps!) 2) universe2go displays the constellations the same size as the appear in the sky (other apps display them much smaller, making it hard for the beginner to do the matching between screen display and reality) 3) univers2go is fun. You get an automatically activated zoom, that will show you planets, nebulae, galaxies, satellites and much more with a mind blowing magnification many images even in 3D!!! That's super cool and fun. universe2go has several modes so you can explore the night sky in many different ways: 1) Discovery-Mode: explore all 88 official constellations. See lines connecting the appropriate stars and listen to information describing the constellation. 2) Mythology-Mode: listen to entertaining stories about the constellations which have been told by the ancient greeks. This way you will easily learn much about the heroes of old, Gods, Beasts and beautiful princesses. 3) Deep-Sky-Mode: see images (most of the from the Hubble Space Telescope) of planets, nebulae, star clusters, galaxies, comets, satellites in a way that would be impossible even with the best telescope. Many of them even in 3D which have been processed especially for universe2go. 4) Quiz-Mode: test your knowledge about the night sky. Find constellation that universe2go will show you. universe2go contains more than 3 hours of excellent audio and hundreds of specially processed images. It contains the complete Hipparcos star catalogue (120.000 stars) and NGC catalogue (7.000 objects). IMPORTANT: will need the universe2go Astro-Glasses to use the Planetariums-Mode. (see universe2go.com for getting it) compatible iPhones: iPhone4, iPhone4S, iPhone5, iPhone5S, iPhone5C, iPhone6 Runs also on iPad (you can switch on a special simulation demo mode in the settings)
ASGuide
Explore the night sky with a personal guide to visible planets, galaxies, and stars. Plan observations, find celestial targets, and learn about discoveries with detailed information and an interactive atlas. Customize your view for nighttime use.
- Identify visible planets, galaxies, and stars
- Plan observation times and celestial targets
- Filter objects by magnitude and altitude
- Search by common name or catalog number
- Browse solar system and deep-sky objects
- Track moon phases and times
- Interactive sky atlas with high-resolution imagery
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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.
Screenshots
Verdict
The clearest difference is review sentiment: ASGuide at 100% against Universe2Go's 26%. ASGuide also leads on rating (4.8 vs 3.5) and ratings volume (9 vs 2). Universe2Go's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ASGuide holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 2 and 9 respectively. Written reviews point the same way: 26% of Universe2Go's written reviews are positive against 100% of ASGuide's.
Universe2Go ships an update every 2 months, ASGuide every 4 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Universe2Go | ASGuide |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) | 4.8 (9 ratings) — better |
| Positive reviews | 26.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 9 — better |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 298 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | innospiring GmbH | Philip Perez |
Customer experience
Universe2Go
ASGuide
In-app purchases
Universe2Go
No in-app purchases
ASGuide
No in-app purchases








