Best Cosmology App

185+ iOS apps curated and reviewed

4.5 avg rating

19 free apps

Updated June 2026

Out of 185+ cosmology app apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Cosmology App

#1

Cosmology by Aaron Day

Astronomy - Space Education

Editor's Choice

📚 Education

4.7😊(505 ratings)

Free

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Explore the universe with stunning high-resolution images of celestial bodies. Journey through space, visiting planets and their moons, while learning about the evolution of space, time, and matter. Ponder the profound mysteries of existence.

What We Love

🌟 Stunning, beautiful astrophotography images
📚 Educational content about space and universe
👍 Easy to use and understand interface
🎥 Informative videos and interactive features

Room to Improve

🐛 Image interference/technical glitches
📖 Shallow explanations for non-experts
⚠️ Limited educational depth compared to NASA app

#2

Our Galaxy by Otherwise

A Three-Dimensional Atlas

Strong Contender

🔍 Reference

4.7(349 ratings)

Free

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Explore the 3D locations and physical properties of deep sky objects within our galaxy. Visualize the galaxy's structure and enhance your understanding of celestial bodies. Ideal for astronomy enthusiasts and educators.

#3

Space Telescope : JWST, HUBBLE by KAKHA GIORGASHVILI

James Webb Space Telescope

Worth Considering

📚 Education

4.3(28 ratings)

FreeAdsIn-App Purchases

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Explore the universe with real-time updates and stunning visuals from NASA's James Webb Space Telescope. Engage with expert insights, join community discussions, and test your knowledge with interactive quizzes. Discover distant galaxies and unlock the secrets of the early universe.

More Cosmology App apps to explore

Explore the Universe

Identify stars, constellations, satellites, and more by simply pointing your device at the sky. This augmented reality app makes stargazing accessible to everyone, day or night. Explore celestial paths and even travel through time to view the sky on different dates.

Identify stars, constellations, and satellitesAugmented Reality (AR) stargazingSet reminders for celestial events

free with in-app purchases

This app calculates astronomical distances and scales based on user-selected cosmological parameters. It offers a simple interface for astronomers, students, and enthusiasts to quickly determine various cosmic measurements.

Select cosmological parameters (H0, Ωm, ΩΛ)Choose from common reference cosmologiesCalculate luminosity distance

Co–Star Personalized Astrology

Co–Star Personalized Astrology

Horoscopes from the Void

This app provides personalized daily horoscopes and compatibility readings based on NASA data and human astrologers. It helps users understand themselves and their relationships through astrological insights and offers premium features for deeper analysis and advice.

Personalized daily horoscopesFriend chart comparisonNatal chart learning

free with in-app purchases

by Christopher Leet

Explore the potential histories and futures of a universe by adjusting its fundamental components. This educational tool allows users to experiment with radiation, matter, and dark energy to observe how these elements influence cosmic evolution.

Simulate universe histories and futuresTinker with universe compositionObserve cosmic evolution

Stellarium Mobile - Star Map

Stellarium Mobile - Star Map

Watch night sky, find stars

Explore the night sky with a real-time planetarium. Identify stars, planets, constellations, and satellites by simply pointing your phone. Offers detailed astronomical data and cultural constellation interpretations.

Real-time sky simulationIdentify stars, planets, satellitesConstellation shapes and illustrations

free with in-app purchases

Visualiser for CONNECT

Powers of 10: Universe tour

Powers of 10: Universe tour

by David Knothe

Explore the vastness of the universe, from the smallest particles to distant galaxies. This educational app visually demonstrates the immense scale of space and matter, offering a glimpse into the universe's complexity and beauty.

Journey through cosmic scalesVisualize particle sizesCompare celestial body sizes

Star Gazer: Sky Map& Astronomy

Star Gazer: Sky Map& Astronomy

Stars, Moon & Constellation.s

Explore the cosmos by pointing your device at the sky. Discover stars, planets, and constellations with interactive 3D views and augmented reality. Learn fascinating facts about space and celestial bodies.

Interactive 3D celestial object viewsAugmented reality sky explorationIdentify stars, planets, and constellations

Interactive exoplanet database

Explore a vast, interactive database of discovered exoplanets and their host stars. Visualize their physical properties, locations in the night sky, and orbital paths. Discover the observable universe from Earth to the cosmic microwave background with stunning 3D models and augmented reality features.

Interactive visualizations and animationsDaily updated exoplanet and host star properties3D Milky Way model with exoplanet locations

free with in-app purchases

Univerzoom 3D - Explore Scale

Univerzoom 3D - Explore Scale

Zoom in Universe & Microcosmos

Explore the vastness of the universe and the intricacies of the microcosmos with intuitive touch controls. Compare celestial bodies, everyday objects, and subatomic particles to grasp their true scale. Discover fascinating facts and learn about the cosmos and beyond.

Intuitive gesture-based scalingExplore universe to atomic levelsCompare sizes of diverse objects

Time is the Cosmic Rhythm

$4.99 | 100% OFF

Explore the cosmos with this app that offers interactive tools for celestial navigation and astronomical observation. Visualize the sky, Earth, and solar system from multiple perspectives, and discover constellations, planets, and events in augmented reality. It's a blend of ancient wisdom and modern technology for a deeper connection to the universe.

Multiple celestial perspectives (sky, Earth, solar system)Augmented reality sky explorationInteractive astronomical and world clocks

free with in-app purchases

Solar Walk Lite - Planetarium

Solar Walk Lite - Planetarium

Planets System & Astronomy 3D

Explore our Solar System in an interactive 3D model. Discover celestial bodies with detailed information, real photos, and stunning visuals. This free app offers a pocket planetarium experience without requiring an internet connection.

Interactive 3D Solar System modelReal-time celestial body positionsDetailed information and photos

free with in-app purchases

Sky Tonight - Stargazing Guide

Sky Tonight - Stargazing Guide

Constellation Star Finder App

Explore the night sky with this astronomy app. Identify celestial objects, discover upcoming astronomical events, and track their positions. Customize your view, set reminders, and access detailed information for a personalized stargazing experience.

Real-time interactive sky mapAugmented reality modeTime Machine for past/future positions

free with in-app purchases

Sky Live: Heavens Above Viewer

Sky Live: Heavens Above Viewer

Watch Skies: Stargazing App

Plan your stargazing adventures and capture stunning photos of the night sky. Get real-time weather, visibility scores, and a unique hourly stargazing index based on multiple criteria. Discover what planets, stars, and constellations are visible from your location.

Hourly stargazing indexWeather forecast integrationLight pollution data

free with in-app purchases

Star Walk：Find Stars & Planets

Star Walk：Find Stars & Planets

Night Sky Guide - Star Map AR

Explore the night sky with an interactive guide that identifies stars, planets, and constellations in real-time using augmented reality. Discover over 200,000 celestial bodies with detailed information and track astronomical events.

Real-time night sky mapAugmented reality viewExplore 200,000+ celestial bodies

free with in-app purchases

by Qingqing Mao

Explore detailed all-sky maps of cosmic microwave background radiation from the Big Bang. Compare different generations of fluctuations in high resolution and view galactic coordinates and microwave sources.

4K resolution CMB mapsCompare multiple mapsZoom and scroll for details

Gain practical insights into timing, compatibility, and decision-making with personalized astrology and numerology. Understand daily energy, analyze relationships, and discover your life path for real-world results.

Daily energy guidanceAdvanced compatibility calculatorLife path and birthdate analysis