Asteroid Close Approach vs Hubble
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
Read full descriptionHide full description
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.
Hubble
Read full descriptionHide full description
With the "Hubble: Deep Space PRO" application, our aim is to provide you with the information obtained from current researches about 'the Universe' in a compact way. Here you will find many fascinating images, some of which you will want to examine in detail and some you will want to read in detail. You will have a nice user experience and obtain detailed information while navigating through the beautiful photos taken by Hubble Space Telescope. FEATURES • In the "Browse" section, you will be able to quickly browse through hundreds of photos (550+) and also read detailed information about them. • In the "SlideShow" section, you will be able to browse through hundreds of impressive photos in full screen size and feel as if you were in the orbit at that moment. If you wish, you will be able to get detailed information about these impressive sights by tapping the Info button. • In the "Gallery" section, you will be able to see all the photos impressively, show what you want in full screen and when you want to examine them in detail, you can zoom in with the help of your fingers. • For those who do not want to be contented with just beautiful photos, there are many videos (220+) in the "Videos" section. • You will get detailed information about "Deep Space Objects", • You will also find three-dimensional models in the "3D" section.
Screenshots
Verdict
The clearest difference is update cadence: Asteroid Close Approach at every 4 weeks against Hubble's every 9 months. Hubble's advantage is price ($0.99 vs $1.99). On ads, in-app purchases, device support and iOS requirement 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 Hubble $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, Hubble every 9 months. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.
| Parameter | Asteroid Close Approach | Hubble |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 4 weeks — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 34 MB | 1.7 GB |
| Age rating | 4+ | 9+ |
| Developer | Arpacore B.V. | Alparslan Topbas |
In-app purchases
Asteroid Close Approach
No in-app purchases
Hubble
No in-app purchases








