ASGuide vs NEOScope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ASGuide
Explore the night sky with this astronomy companion. Discover planets, galaxies, nebulae, and more visible from your location. Generate custom viewing lists and preview celestial objects with an interactive sky atlas.
- 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
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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.
NEOScope
Explore and track celestial objects with real-time data. Examine their size, speed, and proximity to Earth. Discover fascinating details about near-Earth objects.
- Track Near Earth Objects
- Examine size, speed, and close calls
- Utilizes NASA's NeoWs API
- Detailed object information
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Track Near Earth Objects with NASA's NeoWs API. Examine NEO size, speed, close calls & more!
Screenshots
Verdict
The clearest difference is price: ASGuide at Free against NEOScope's $0.99. ASGuide also leads on ratings volume (9 vs 1). NEOScope's advantage is rating (5.0 vs 4.8). On review sentiment, 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
ASGuide is free to download; NEOScope costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NEOScope holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ASGuide has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
ASGuide ships an update every 4 months, NEOScope every 7 months. Both last shipped on October 1, 2026.
| Parameter | ASGuide | NEOScope |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.8 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 9 — better | 1 |
| Update frequency | Every 4 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Philip Perez | Christopher Bookmyer |
Customer experience
ASGuide
NEOScope
In-app purchases
ASGuide
No in-app purchases
NEOScope
No in-app purchases
