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Best Astronomy Apps in 2026
Astronomy apps can help you explore sky objects, learn about space or follow missions, with capabilities that vary across the entries. Compare catalog size and platform coverage, then consider whether AR sky view or offline access suits how you observe. Learning content and mission tracking offer other ways to explore, while telescope control may matter if it’s part of your setup. NASA Eyes, Solar System Scope and Cosmic Watch are among the named apps, alongside Night Sky and Seestar App. Free-plan availability and paid-from pricing provide further points of comparison.
- 35 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
Gaia Sky
Free plan Open source APILinuxMac+2Gaia Sky combines large-scale scientific visualization with user data, scripting, and multiple viewing modes.
- 2
NASA Eyes
Free plan Open source AndroidiPhoneLinux+4NASA Eyes brings several NASA data visualizations together in a browser-based suite, from Solar System exploration to Earth science and spacecraft communications.
- 3
Celestia
Free plan AndroidiPhoneLinux+3Celestia combines real-time solar system motion with a planetarium view and expandable catalogues. Check the platform-specific download route, especially if you want the browser or Linux version.
- 4
Aladin Desktop
Free plan LinuxMacWindowsAladin Desktop combines astronomical image visualization, catalogue work, and access to distributed data in one desktop application.
- 5
Cosmic Watch
Free plan AndroidiPhoneMacCosmic Watch brings sky identification, Earth and solar-system views, and clock features together in one app.
- 6
ISS Detector
Free plan AndroidiPhoneMac+1ISS Detector combines pass predictions, alerts, and local weather checks, with additional tracked objects available through Pro.
- 7
Heavens-Above
Free plan AndroidiPhoneWebHeavens-Above brings satellite predictions together with sky charts and astronomy information across web and mobile platforms.
- 8
DWARFLAB App
Free plan AndroidiPhoneDWARFLAB App combines telescope control with image processing, tracking and time-lapse tools. Its listed support is for DWARFLAB telescope models, so check that a device is among those supported.
- 9
KStars
Free plan LinuxMacWindowsKStars combines sky simulation, observing-session planning, and astronomy equipment support in a free desktop application.
- 10
Night Sky
Free plan AndroidiPhoneMacNight Sky covers object identification and local observing information in its free Basic plan, with additional features in subscriptions.
- 11
SkyORB
Free plan AndroidiPhoneMac+1SkyORB offers sky charts, event alerts, observation planning, and celestial-object information, with a free Classic edition and separately priced SkyORB ∞ options.
- 12
BXA
Free plan LinuxBXA adds Bayesian inference and model comparison to Sherpa or Xspec workflows, with options for MPI processing.
- 13
Luminos Pro
Free plan iPhoneMacLuminos Pro combines sky exploration with equipment tools and telescope controls. Its free exploration, trial, and in-app purchases offer different ways to access the app.
- 14
Solar System Scope
Free plan AndroidiPhoneMac+2Solar System Scope offers several ways to explore the sky, from a browser model to mobile sky viewing and an offline desktop app.
- 15
OpenSpace
Free plan LinuxWindowsChoose OpenSpace if you need free, open-source interactive space visualizations for education, research, or presentations, especially with planetarium and multi-display capabilities.
- 16
Seestar App
Free plan AndroidiPhoneMac+1Seestar App brings observation control, target search, and image tools together for Seestar telescope users. Note the S50’s internet-dependent tasks and the model-specific S30 Pro limitations.
- 17
Star Chart
Free plan AndroidiPhoneMac+1 - 18
Singularity
Free plan AndroidiPhoneSingularity provides telescope control, planning, imaging, and scheduling in a free mobile app.
- 19
Sky Guide
Free plan iPhoneMacSky Guide combines identification, augmented reality, alerts, time controls, and an event calendar, with offline support and a free plan.
- 20
SkyPortal
Free plan AndroidiPhoneSkyPortal combines a broad sky catalog and observation aids with control for compatible Celestron equipment.
- 21
Star Chart
Free plan AndroidiPhoneMac+1Star Chart pairs a large celestial catalogue with location, time-shift, and guided exploration tools. Its free plan includes all features, while augmented reality depends on a built-in compass.
- 22
Stellarium
Free plan LinuxMacWeb+1Stellarium combines extensive sky catalogues with simulation, customization, and telescope-control features. Check the listed system requirements before choosing the desktop version.
- 23
SkyView
Free plan AndroidiPhoneSkyView combines camera identification, augmented reality, object paths, and offline operation for mobile sky exploration. Choose between the broader paid catalog and the smaller free Lite edition.
6.9 Visit site - 24
Spacecraft AR
Free plan AndroidiPhoneChoose Spacecraft AR for a free mobile way to explore spacecraft models and mission information in augmented reality. Look elsewhere if you need lesson authoring or classroom management.
- 25
Halotools
Free plan LinuxHalotools offers a focused toolkit for galaxy–halo modeling, mock populations, catalog preparation, and astronomical statistics.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
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