Asteroid Close Approach vs NEOScope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Asteroid Close Approach
Get real-time updates on near-Earth asteroid close approaches, including dates, distances, and impact energies. Access NASA's Sentry database for collision predictions and use a built-in calculator to estimate asteroid mass and energy.
- Real-time asteroid data on Apple Watch
- Comprehensive approach details
- Access to NASA's Sentry database
- Asteroid mass and energy calculator
- Collision monitoring for the next century
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Stay informed about the most recent near-Earth asteroid encounters—right from your iPhone or on your Apple Watch. Easily check the upcoming dates and times of close approaches, along with their distances, velocities, magnitudes, and estimated impact energies in kilotons. Dive into NASA’s Sentry database, a powerful collision monitoring system that continuously scans the latest asteroid catalog for any potential impacts within the next 100 years. Curious about an asteroid’s mass and energy? Use the built-in calculator to estimate these figures based on its absolute magnitude and approach speed. Features: • Latest Encounters on Your Wrist: View real-time asteroid data at a glance on your Apple Watch. • Comprehensive Tracking: Check each asteroid’s approach date, distance, velocity, magnitude, and potential impact energy. • Sentry Database Access: Keep tabs on NASA’s up-to-date collision predictions for the next century. • Asteroid Mass & Energy Calculator: Estimate physical properties and potential impact energy with a simple input of magnitude and speed. Stay informed, prepared, and captivated by the wonders of our cosmic neighborhood—anytime, anywhere.
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 Asteroid Close Approach's 0%. NEOScope also leads on price ($0.99 vs $1.99). Asteroid Close Approach's advantage is update cadence (every 4 weeks vs every 7 months) and device support (3 vs 1). On ads, in-app purchases and monetization model 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
Asteroid Close Approach costs $1.99 and NEOScope $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Asteroid Close Approach ships an update every 4 weeks, NEOScope every 7 months. The most recent releases landed on September 23, 2026 and June 12, 2026 respectively.
| Parameter | Asteroid Close Approach | NEOScope |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod, Apple Watch — better | iPhone |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 34 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Arpacore B.V. | Christopher Bookmyer |
Customer experience
Asteroid Close Approach
NEOScope
In-app purchases
Asteroid Close Approach
No in-app purchases
NEOScope
No in-app purchases
Questions
Is Asteroid Close Approach free?
Is NEOScope free?
Do Asteroid Close Approach or NEOScope have ads?
Which is updated more often, Asteroid Close Approach or NEOScope?
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