Comparison

Asteroid Close Approach vs Hubble

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read 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.

About

Hubble

Features
Read 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

Asteroid Close Approach4 screens
Hubble4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 6 level
Asteroid Close Approach versus Hubble: the parameters behind the verdict, then further details
ParameterAsteroid Close ApproachHubble
Price$1.99$0.99 — better
Positive reviews0.0% of reviews—
Update frequencyEvery 4 weeks — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS14.0 — better15.6
Further details — not scored
Size34 MB1.7 GB
Age rating4+9+
DeveloperArpacore B.V.Alparslan Topbas

In-app purchases

None

Asteroid Close Approach

No in-app purchases

None

Hubble

No in-app purchases

Questions

Is Asteroid Close Approach free?
Asteroid Close Approach costs $1.99, with no in-app purchases.
Is Hubble free?
Hubble costs $0.99, with no in-app purchases.
Do Asteroid Close Approach or Hubble have ads?
Neither Asteroid Close Approach nor Hubble shows ads.
Which is updated more often, Asteroid Close Approach or Hubble?
Asteroid Close Approach ships an update every 4 weeks, and Hubble every 9 months. Most recently, Asteroid Close Approach was updated on September 23, 2026 and Hubble on September 13, 2026.

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