SkySafari vs Stellarium

Stellarium and SkySafari are both planetarium applications that show you what is in the night sky, but they serve different segments of the astronomy community. Stellarium is a free, open-source desktop application (also available on mobile) that renders a photorealistic sky simulation. SkySafari is a commercial mobile app with deep telescope integration that serious amateur astronomers use for observation planning and telescope control.

Stellarium has been the gold standard for free planetarium software since 2001. The desktop version renders the sky with stunning realism—atmospheric effects, the Milky Way, deep-sky objects, constellation art, satellite passes, and accurate planetary positions. It includes a catalog of over 600,000 stars in the base installation and can display millions more with additional catalogs. The rendering quality is exceptional for a free application and it runs on Windows, macOS, and Linux. A mobile version (Stellarium Mobile) is available for iOS and Android, with a paid Plus version adding extra catalogs and features.

For casual stargazing—identifying that bright star, finding planets, learning constellations, or checking when the ISS passes overhead—Stellarium is perfect and free. The desktop version is particularly good for education, presentations, and planning photography sessions where you need to know exactly where celestial objects will be at a specific time and location.

SkySafari is a commercial iOS and Android app available in three tiers: SkySafari 7 (basic, ~$5), SkySafari 7 Plus (~$15), and SkySafari 7 Pro (~$40). The tiered pricing reflects increasing database sizes and features. The Pro version includes over 100 million stars, 3 million deep-sky objects, and—critically—telescope control capabilities that let you point your computerized telescope at any object by tapping it on screen.

The telescope control feature is what separates SkySafari from Stellarium for serious observers. SkySafari Pro connects via WiFi or Bluetooth to GoTo telescope mounts from Celestron, Meade, Sky-Watcher, iOptron, and others. You browse the sky on your phone, tap an object, hit "GoTo," and your telescope slews to that target. This integration transforms observation sessions—instead of manually entering coordinates or star-hopping, you have a visual interface that controls your hardware directly.

SkySafari also excels at observation planning. You can create observing lists, log observations with notes and sketches, track which Messier or NGC objects you have observed, and plan sessions based on what is visible from your location at a specific time. The "Tonight's Best" feature suggests interesting objects currently well-positioned for viewing. These planning tools matter when you have limited clear sky time and want to maximize productive observing.

Stellarium's mobile version competes with SkySafari's basic tier but lacks the telescope control and observation logging that define SkySafari's value for active observers. Stellarium Mobile Plus (~$20) adds some features but still does not match SkySafari Pro's telescope integration or database depth.

Feature	SkySafari	Stellarium
Sugggest Score	—	—
Category	Science & Education	Education & Reference
Pricing	—	Open Source

Product Overview

SkySafari

Description: SkySafari is an astronomical software program used to identify stars, planets, constellations and other celestial objects visible in the night sky. It contains a database of millions of space objects as well as information and imagery from NASA missions.

Stellarium

Description: Stellarium is an open-source planetarium software that shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It can be used to learn about astronomy and identify stars, constellations, planets and satellites.

Key Features Comparison

SkySafari Features

• Point telescope mounts to celestial objects
• View night sky in 2D and 3D modes
• Access database of millions of space objects
• View imagery from NASA missions
• Adjustable time controls and location settings
• Augmented reality mode overlays objects on live camera view

Stellarium Features

• Realistic 3D rendering of the night sky
• Accurate positions of stars, constellations, planets, and satellites
• Support for multiple languages and cultures
• Telescope control integration
• Scriptable via plugins
• Multiplatform - runs on Windows, Mac, Linux

Pros & Cons Analysis

SkySafari

Pros

• Intuitive and easy to use interface
• Comprehensive astronomical database
• Syncs with telescope mounts
• Detailed object information and imagery
• Works offline without internet connection

Cons

• Requires in-app purchases to unlock full features
• Limited capabilities without telescope integration
• Some features only available on iOS or Android versions

Stellarium

Pros

• Free and open source
• Beautiful graphics
• Very customizable
• Great for education and outreach
• Active development community

Cons

• Steep learning curve
• Complex interface
• Requires decent graphics card for best performance
• Limited native mobile support

Pricing Comparison

SkySafari

• Not listed

Stellarium

• Open Source