Best Astronomy Calculator Apps

215+ iOS apps curated and reviewed

4.6 avg rating
15 free apps
Updated June 2026

The best astronomy calculator apps on iPhone average 4.6★ across 215+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.

Top Picks for Astronomy Calculator

Star Walk 2 Plus: Live Sky Map#1

Star Walk 2 Plus: Live Sky Map by Vito Technology Inc.

Your Free Path to the Stars
Editor's Choice
📚 Education
4.6😐(93K ratings)
FreeAdsIn-App Purchases
Star Walk 2 Plus: Live Sky Map screenshot 1
Star Walk 2 Plus: Live Sky Map screenshot 2
Star Walk 2 Plus: Live Sky Map screenshot 3
Star Walk 2 Plus: Live Sky Map screenshot 4
Star Walk 2 Plus: Live Sky Map screenshot 5
Star Walk 2 Plus: Live Sky Map screenshot 6

Explore the night sky using your device with an exquisite stargazing app that identifies stars, planets, and constellations. Simply point your device to the sky for an effortless journey through the cosmos.

What We Love

  • 🌟 Informative and educational
  • 🔭 Accurate star/planet tracking
  • 🎨 Beautiful visuals and graphics
  • 🔊 Relaxing background music

Room to Improve

  • 💢 Excessive and intrusive ads in free version
  • 🤔 Confusing navigation and controls
  • 🧭 Inaccurate compass and location tracking
SkyView® Lite#2

SkyView® Lite by Terminal Eleven LLC

Explore the Universe
Strong Contender
📚 Education
4.5😊(18K ratings)
FreeAdsIn-App Purchases
#30in Education
SkyView® Lite screenshot 1
SkyView® Lite screenshot 2
SkyView® Lite screenshot 3
SkyView® Lite screenshot 4

Explore the Universe with an innovative stargazing app that helps you identify stars, constellations, and satellites by simply pointing your device at the sky. Perfect for all sky enthusiasts, it offers a user-friendly experience with features like celestial event reminders and precise object identification.

What We Love

  • 🌟 Accurate star and planet tracking
  • 👍 Easy to use and navigate
  • 🔭 Helpful for learning about the night sky
  • 💫 Engaging and educational for all ages

Room to Improve

  • 🐛 Compass/location issues causing inaccurate positioning
  • 🔍 Limited free features, many paid upgrades
  • 🤔 Confusing for some users to understand how it works
Calculator ##3

Calculator # by Incpt.Mobis

Scientific Calculator
Worth Considering
🔧 Utilities
4.6😐(36K ratings)
FreeAdsIn-App Purchases
Calculator # screenshot 1
Calculator # screenshot 2
Calculator # screenshot 3
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Calculator # screenshot 5
Calculator # screenshot 6

Calculate complex mathematical equations effortlessly with this intuitive app. Simplify your calculations on the go with advanced features like graph plotting and equation solving. Download now to supercharge your math skills!

What We Love

  • 👍 Easy to use
  • 🚀 Powerful functionality
  • 💡 Helpful for math classes
  • ⭐ Great for students

Room to Improve

  • 🔍 Confusing interface after update
  • 📢 Too many intrusive ads
  • 💰 Paywall for advanced features

More Astronomy Calculator apps to explore

4
Sky Guide: AR Astronomy Finder
Sky Guide: AR Astronomy Finder
Sky Guide: AR Astronomy Finder
Star gaze constellation finder
Free

Discover the universe with ease using this powerful star gazing app that identifies stars, constellations, planets, and satellites when you point your device to the sky. Whether you're a seasoned stargazer or a beginner, this app's AR mode and time controls make exploring the cosmos effortless. Join millions in connecting with the stars and explore the night sky like never before.

🔍 Reference
(26K)
5
Calculator for iPad₊
Calculator for iPad₊
Calculator for iPad₊
Basic, Scientific, Plus Calc
Free

A powerful math solver and scientific calculator for iPad and iPhone, featuring advanced functions and quick calculations. Share your results easily and master your business expenses with percentage calculations. Get it now!

🔧 Utilities
(126K)
6
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Scientific Graphing Calculator
$5.99

An advanced scientific graphing calculator app that is user-friendly and suitable for basic to advanced mathematics, offering a powerful math core and extensive support features. Ideal for engineers, math students, and more, with built-in documents for various calculations. Explore the world of advanced mathematics with ease and efficiency.

📚 Education
(12K)
7
SkySafari 7 Pro
SkySafari 7 Pro
SkySafari 7 Pro
Astronomy Guide To Night Sky
$29.99

Discover the ultimate astronomy guide with the largest database of solar system objects, precise tools for planning and logging, telescope control, and the best stargazing experience. Start exploring the night sky now!

🔍 Reference
(4.9K)
8
Color Calculator-smart&cute
Color Calculator-smart&cute
Color Calculator-smart&cute
Cute calculator app with theme
Free

A color calculator app that helps users find complementary color schemes for design projects. Simply input a base color and let the app generate harmonious color combinations for your projects. Try it now to elevate your design choices!

🔧 Utilities
(15K)
9
Night Sky
Night Sky
Night Sky
Guide to Stars,Comets,Meteors
Free

Night Sky is a unique stargazing app that offers AR personal planetarium features. Easily identify stars, planets, constellations, and satellites by pointing your device to the sky. With features like Sky Tags, Connected Stargazing, Spatial Audio Object Navigation, and an AR Sky Window, explore the night sky like never before.

🔍 Reference
(482K)
10
Astronomy & Space News
Astronomy & Space News
Astronomy & Space News
Latest NASA, Astrobiology News
Free

Explore the wonders of the universe with this innovative application that offers real-time sky maps, celestial event notifications, and detailed information about planets and stars. Download now to unlock a world of astronomical discovery!

📡 News
(2.7K)
11
Calculator with History +
Calculator with History +
Calculator with History +
No ads & Scientific calculator
Free

A calculator app with a built-in history feature that keeps track of your calculations without any ads. Calculate effortlessly and access your past computations instantly.

💰 Finance
(23K)
12
Star Gazer: Sky Map& Astronomy
Star Gazer: Sky Map& Astronomy
Star Gazer: Sky Map& Astronomy
Stars, Moon & Constellation.s
Free

Explore the wonders of the night sky with this intuitive stargazing app. Identify constellations, planets, and stars with just a few taps. Download now to embark on your celestial journey!

📚 Education
(33)
13
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

A top-rated scientific calculator app on iOS devices offering advanced math functions with a user-friendly interface for users of all levels. Features include step-by-step solutions, math photo solving, and handwriting recognition. Enhance your calculations with this versatile tool.

📚 Education
(6.2K)
14
SkyORB 2021 Astronomy in AR
SkyORB 2021 Astronomy in AR
SkyORB 2021 Astronomy in AR
3D Planetarium Stargazing News
Free

Embark on a cosmic journey with our all-in-one astronomy companion app. Explore the universe in real-time with a 3D star map, identify stars and planets, stay informed about celestial events, and enjoy features like moon phases and worldwide simulations. Experience stargazing like never before – download now!

📚 Education
(16)
15
Calculator₊
Calculator₊
Calculator₊
Basic, Scientific, Plus Calc
Free

Try Calculator₊, the ultimate mathematics tool offering basic, scientific, and plus calculations. Ideal for homework, exams, and managing expenses, this app is like having a personal math tutor on your phone. Download now for easy and intuitive math solutions!

🔧 Utilities
(1.7M)
16
GraphNCalc83
GraphNCalc83
GraphNCalc83
Graphing calculator
$12.99

The app is a comprehensive graphing calculator that features algebraic entry, math functions, graph plotting, statistics, matrix operations, unit conversion, BASIC programming, chemistry tools, geometry calculations, finance functions, and a built-in user guide for easy reference. It offers a colorful, fast, and fluid experience on iPhone and iPad with advanced features like touch input, high-resolution graph outputs, and fast computation speeds. Explore its diverse functionality to enhance your mathematical tasks.

📚 Education
(3.8K)
17
Calculator!
Calculator!
Calculator!
by 7th Gear
$0.99

Calculator! is a versatile calculator app for iPad and iPhone with standard and scientific functions. Customize the look, take notes, view history, and perform complex calculations with ease. Perfect for math students and professionals.

🔧 Utilities
(4.2K)
18
Calculator⁼
Calculator⁼
Calculator⁼
Fraction, Scientific Calc +
Free

A handy math assistant for solving basic and scientific calculations intuitively and quickly. Become a math master with this free app!

🔧 Utilities
(357K)
19
Calculator with History Tape
Calculator with History Tape
Calculator with History Tape
No Ads Calculator with Memory
Free

Access a user-friendly calculator app with a built-in archive of your calculations for easy reference. Enjoy an ad-free experience with customizable features for seamless calculations. Try it now for straightforward and efficient math operations.

📊 Productivity
(3.2K)
20
APOD — Astronomy Picture
APOD — Astronomy Picture
APOD — Astronomy Picture
Astronomy Picture of the Day
Free

Explore mesmerizing images of the universe with a daily dose of astronomy wonders through this mobile app. Dive into the depths of space with photos from NASA and learn from professional astronomers. Immerse yourself in the beauty of the cosmos and get inspired every day!

🎬 Entertainment
(1.2K)