# Astrophysics II > Educational astronomy app covering stars, light, matter, and stellar evolution. (iPhone/iPad app by Xavier Daxhelet.) - Source: https://appshunter.io/ios/app/astrophysics-ii/id525011116 (this page in markdown: same URL + `.md`) - Developer: [Xavier Daxhelet](https://appshunter.io/developer/339056993) - Category: Reference, Education - Price: $2.99 - Rating: 4.30/5 from 6 App Store ratings · 14 written reviews indexed - Age rating: 4+ - Requires: iOS 18.6 · 68 MB - Languages: French (France), American English - Released: 2012-07-25 - Data updated: 2026-08-17 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/astrophysics-ii/id525011116/reviews.md ## What is Astrophysics II? 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. ## Key features - Covers stars and stellar evolution - Over 60 screens of content - More than 25 3D animations - Classroom projection features - Detailed topics on light and matter - Information on stellar systems - Includes physical and astronomical constants ## Recent user reviews (10 of 14) All indexed reviews: https://appshunter.io/ios/app/astrophysics-ii/id525011116/reviews.md ### 5/5 — Application excellente *2026-07-11* Toutes les applications du développeur sont indispensables à qui s’intéresse à l’astronomie. Merci ! **Developer response:** Ce problème a été résolu avec la version 5.1 ### 5/5 — Just make the better universe size comparison *2025-05-10* 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 ### 5/5 — Just make the better universe size comparison *2025-05-08* List of 82 objects: Comet 67P Deimos Moon 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 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 ### 5/5 — Still waiting for the star size comparison to be better! *2024-07-14* 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! ### 5/5 — Stephenson 2-18 is the biggest star than Betelgeuse *2024-06-30* Can you add these big stars? ### 5/5 — Great App! *2018-06-04* 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! ### 1/5 — Bugs quasi général *2016-08-01* Bonjour. Après avoir acheté astrophysique n°1 qui a eu également un Bug général ou les animations et les différentes informations ne s'ouvrait pas et qui a plus tard été corrigé, je viens d'acheter le n°2. Surprise! Même problème que le 1. Les animations et les informations ne s'ouvrent pas! Ou très rarement.S'il vous plaît, veuillez corriger ces différents bugs au plus vite pour profiter de cette excellente application. Merci d'avance. ### 5/5 — super *2016-01-30* Application de grande qualité que je conseille à tous. J'ai rien vu d'équivalent ailleurs.... ### 1/5 — Not much information for the cost :( *2014-08-10* Not much information for the cost :( ### 4/5 — Peu mieux faire :) *2014-05-09* Ce qui serait extra c'est de pouvoir sélectionner la langue : En ou Fr ... Et aussi avoir la possibilité d'imprimer 1 page... Sinon c'est bien. Merci. ## Frequently asked questions about Astrophysics II ### What topics does Astrophysics II cover? Astrophysics II covers a wide range of topics related to stars, including light and matter, stellar systems, the life cycle of stars, and physical and astronomical constants. It features over 60 screens of content and more than 25 3D animations. ### Is Astrophysics II suitable for classroom use? Yes, Astrophysics II is designed for educational purposes. Teachers can connect their iPad to a video projector to display the animations and content to their students in a classroom setting. ### What is the price of Astrophysics II? Astrophysics II is a paid application, priced at $2.99. It does not feature in-app purchases or advertisements. ### What devices is Astrophysics II compatible with? Astrophysics II is compatible with iPhones and iPads. It is available for download on these devices. ### How often is Astrophysics II updated? The latest version of Astrophysics II is 5.0, last updated on April 14, 2026. The app was originally released on July 25, 2012. ### What is the age rating for Astrophysics II? Astrophysics II has an age rating of 4+, making it suitable for a broad audience interested in learning about space. ### What is the user rating for Astrophysics II? Astrophysics II has a rating of 4.3 stars based on 6 user ratings. This indicates a generally positive reception from its users. ### Does Astrophysics II have ads? No, Astrophysics II is ad-free. As a paid application, it provides an uninterrupted learning experience without advertisements. ## Version history (last 5 releases) ### 5.1 — 2026-04-28 - Fixed a bug with the display in Dark mode. ### 5.0 — 2026-04-14 - Interface modernization, - Ready for iOS 26 ### 4.0 — 2022-04-15 - Update for iOS 12, - Update for the new 2018 iPads pro, - Overall improvements. ### 3.0 — 2017-12-18 This app has been updated by Apple to display the Apple Watch app icon. - Update for iOS 11 and iPhone X. - Overall improvement ### 2.2 — 2017-07-18 - Bug corrections, - System update. ## Apps similar to Astrophysics II | App | Rating | Price | Category | | --- | --- | --- | --- | | [一沐考编考编库事业单位ABCDE类-2023最新版](https://appshunter.io/ios/app/abcde-2023/id1621671540) | — | Free | Reference | | [Angelology](https://appshunter.io/ios/app/angelology/id1607575000) | 5.0 (4) | Free | Reference | | [北京版小学英语-学生最新同步点读口语专家](https://appshunter.io/ios/app/id1616159800) | 4.0 (4) | Free | Reference | | [Telugu Bible + Audio Mp3](https://appshunter.io/ios/app/telugu-bible-plus-audio-mp3/id1606887420) | 4.5 (17) | Free | Reference | | [Catholic Jerusalem Bible+Audio](https://appshunter.io/ios/app/catholic-jerusalem-bible-plus-audio/id1605531940) | 4.4 (31) | Free | Reference | | [Women Indonesian Bible + Audio](https://appshunter.io/ios/app/women-indonesian-bible-plus-audio/id1606893280) | 5.0 (1) | Free | Reference | ## More apps by Xavier Daxhelet - [Refractive](https://appshunter.io/ios/app/refractive/id339056990) - [Touch Waves](https://appshunter.io/ios/app/touch-waves/id347672384) - [Heat & Work](https://appshunter.io/ios/app/heat-and-work/id377771944) - [Mechanix](https://appshunter.io/ios/app/mechanix/id386599739) - [Electromag](https://appshunter.io/ios/app/electromag/id404649255) - [Touch Fluids](https://appshunter.io/ios/app/touch-fluids/id427420343) All apps by Xavier Daxhelet: https://appshunter.io/developer/339056993 ## Related topics [astrophysics ii](https://appshunter.io/ios/topics/astrophysics-ii) · [xavier daxhelet](https://appshunter.io/ios/topics/xavier-daxhelet) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*