---
title: "Astrophysics II - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Astrophysics II is the second of a series of three educative applications in astronomy. This second part covers the stars.  More than 60 screens of astronomy on the solar system !  More than 25 animat"
---

# Astrophysics II — United States

![Astrophysics II App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/08/c0/96/08c0965d-0ac3-4524-e8ab-8e8d41d49e85/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Xavier Daxhelet](https://apptail.io/developer/xavier-daxhelet-HuM)
**Category:** Reference
**Rating:** 4.3/5 (6 ratings)
**Price:** Free
**Bundle ID:** com.kromasoft.astrophysicsII
**Store:** Apple App Store
**Country:** United States
**Version:** 5.1 (released 2026-04-28)
**Original Release:** 2012-07-25
**Languages:** English, French

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id525011116)
**AppTail Page:** [https://apptail.io/app/astrophysics-ii-VJBc/united-states](https://apptail.io/app/astrophysics-ii-VJBc/united-states)

## Astrophysics II Description
Astrophysics II is the second of a series of three educative applications in astronomy. This second part covers the stars. 
More than 60 screens of astronomy on the solar system ! 
More than 25 animations to explain astrophysics, most in 3D. 

For teachers !! Connect your iPad with a video projector and show the animations to your students in classroom. 

List of topics:

Light and Matter:
- Electromagnetic Radiation,
- Light Radiation,
- Matter,
- Light-matter interaction,
- The Dopplet Effect,
- Telescopes.
- Radio telescopes.

Stellar Systems
- Constellations,
- Distance Measurement of Stars,
- Multiple Systems,
- Nebulae,
- Star Cluster.

Life of Star
- Star Formation,
- Physics of Star,
- Nucleosynthesis,
- Evolution of Stars,
- Wolf-Rayet Stars,
- Cepheids,
- Novae,
- Supernovae,
- Black Holes, 
- Neutron Star, 
- Planetary Nebulae.

Constants
- Physical constants,
- Astronomical constants.

References
- Books,
- Website.

## Astrophysics II Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple112/v4/7e/33/f2/7e33f266-a7e4-f41a-8f6a-6ec3a17bbae2/mzl.tvfrvaat.png/640x960.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple122/v4/8f/a4/87/8fa48782-0014-32f5-616e-14ce97550219/mzl.cwbrlzbu.png/640x960.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple112/v4/0c/4e/ac/0c4eacc6-bba5-730b-9741-c940ff7aad99/mzl.olnmvvfi.png/960x600.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple122/v4/ca/98/29/ca98299e-f692-fb58-fb93-84ac0e510919/mzl.gfnggtdn.png/640x920.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple122/v4/e8/67/e6/e867e6e2-fd2f-9ea5-0fcd-550b65310670/mzl.mcjcdzkb.png/960x600.png)

## Astrophysics II Rating Breakdown in United States
- 5 stars: 4 (67%)
- 4 stars: 1 (17%)
- 3 stars: 0 (0%)
- 2 stars: 1 (17%)
- 1 stars: 0 (0%)

## Astrophysics II Reviews in United States

### ***** "Just make the better universe size comparison"
List of 82 objects:
Comet 67P
Deimos Moon
Neutron Star
Phobos Moon
Ultima Thule
Eros
216 Kleopatra
Mimas Moon
Vesta
Ceres
Charon Moon
Titania Moon
Eris
Pluto
Triton Moon
Europa Moon
Earth’s Moon
Io
Callisto
Mercury
Titan Moon
Ganymede Moon
Mars
Sirius B
Venus
Earth
Kepler 22b
Neptune
Uranus
Saturn
Jupiter
Proxima Centauri
61 Cygni A
Sun
Alpha Centauri A
Sirius A
Vega
Spica
Pollux
Sagittarius A black hole
Arcturus
Polaris
Aldebaran
Rigel
Deneb
Pistol Star
Antares
Betelgeuse
NML Cygni
VY Canis Majoris
UY Scuti
Stephenson 2-18
TON 618 black hole
Phoenix A black hole
Stingray Nebula
Cat’s Eye Nebula
Boomerang Nebula
Ant Nebula
Helix Nebula
Horsehead Nebula
Crab Nebula
Orion Nebula
North America Nebula
Segue 2 Galaxy
Rosette Nebula
Tarantula Nebula
Small Magellanic Cloud
Large Magellanic Cloud
Triangulum Galaxy
Pinwheel Galaxy
Whirlpool Galaxy
Milky Way Galaxy
Cartwheel Galaxy
Andromeda Galaxy
Tadpole Galaxy
IC 1101
Local Group
Phoenix Cluster
Alcyoneus Galaxy
Virgo Supercluster
Laniakea Supercluster
Sloan Great Wall
Hercules Corona Borealis Great Wall
Observable Universe
-- lrhs11, 2025-05-10

### ***** "Still waiting for the star size comparison to be better!"
Could you update this app and build astrophisics 3 for the app store?

And could you build the star size comparison including planets and Inside Out 2 emotions? You’ll make sure to add the biggest stars as of 2022!
-- hill673, 2024-07-14

### ***** "Great App!"
This app is like a book filled with lots of facts about every little thing. This app has all the formulas and I really recommend the full bundle as it is a great price and contains everything you need to know!
-- UniverseDudeGaming, 2018-06-04

### *---- "Not much information for the cost :("
Not much information for the cost :(
-- MsKrump, 2014-08-10

[View all Astrophysics II reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Astrophysics II Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Lebanon | Reference | #216 |
| Top Paid | France | Reference | #223 |

## Astrophysics II Discovered Keywords
- astrophysics ii

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## Astrophysics II Available In
- [United States](https://apptail.io/app/astrophysics-ii-VJBc/united-states)
- [France](https://apptail.io/app/astrophysics-ii-VJBc/france)
- [Spain](https://apptail.io/app/astrophysics-ii-VJBc/spain)
- [Switzerland](https://apptail.io/app/astrophysics-ii-VJBc/switzerland)
- [United Arab Emirates](https://apptail.io/app/astrophysics-ii-VJBc/united-arab-emirates)
- [Austria](https://apptail.io/app/astrophysics-ii-VJBc/austria)
- [Canada](https://apptail.io/app/astrophysics-ii-VJBc/canada)
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---

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