NEOscan vs NEOScope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NEOscan
Explore near-Earth objects like asteroids and comets. Visualize their positions relative to Earth and the Moon, and understand their sizes through familiar comparisons. Data is sourced from NASA's Small Body Database.
- Discover asteroids and comets
- Filter by type, approach time, distance, and diameter
- Earth-Moon model visualization
- Size comparison to familiar objects
- Data from NASA's Small Body Database
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This app helps you discover near-Earth objects (NEOs). Filter by their type (asteroid or comet), closest approach time, closest distance, and diameter. For each NEO, the app shows you an Earth-Moon model with the asteroid (or comet) indicated at the proper location. The app also helps you understand the NEO's size by comparing it to a familiar object. The data on NEOs is provided by NASA's Small Body Database (SBDB) and SBDB Close-Approach Data APIs.
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 review sentiment: NEOScope at 100% against NEOscan's 50%. NEOScope also leads on rating (5.0 vs 2.7). NEOscan's advantage is price (Free vs $0.99) and ratings volume (7 vs 1). On 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
NEOscan 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 2.7. That said, the two scores are not equally well evidenced: NEOscan has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of NEOscan's written reviews are positive against 100% of NEOScope's.
NEOscan ships an update every 12 months, NEOScope every 7 months. Both last shipped on October 24, 2026.
| Parameter | NEOscan | NEOScope |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 2.7 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 12 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 37 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Carlos Anderson | Christopher Bookmyer |
Customer experience
NEOscan
NEOScope
In-app purchases
NEOscan
No in-app purchases
NEOScope
No in-app purchases
