Best Gaia Sky Alternatives in 2026
Updated
20 apps from astronomy apps ranked against Gaia Sky on the same published basis.
- 1Gaia Sky vs NASA Eyes
- 2Gaia Sky vs Celestia
- 3Gaia Sky vs Solar System Scope
- 4Gaia Sky vs Cosmic Watch
- 5Gaia Sky vs Night Sky
- 6Gaia Sky vs Star Chart
- 7Gaia Sky vs Star Chart
- 8Gaia Sky vs DWARFLAB App
- 10Gaia Sky vs KStars
- 11Gaia Sky vs Star Walk 2
- 12Gaia Sky vs Spacecraft AR
- 13Gaia Sky vs squishyplanet
- 14Gaia Sky vs WorldWide Telescope
- 15Gaia Sky vs BXA
- 16Gaia Sky vs Seestar App
- 17Gaia Sky vs Luminos Pro
- 18Gaia Sky vs Sky Guide
- 19Gaia Sky vs UNISTELLAR App
- 20Gaia Sky vs Aladin Desktop
- 21Gaia Sky vs Halotools
Gaia Sky alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | NASA Eyes | 6.8 | Free plan | Free | Android, iOS, Linux, Mac, Web, Windows |
| 2 | Celestia | 6.7 | Free plan | Free | Android, iOS, Linux, Mac, Web, Windows |
| 3 | Solar System Scope | 6.7 | Free plan | Free | Android, iOS, Mac, Web, Windows |
| 4 | Cosmic Watch | 6.6 | Free plan | $0.42/mo | Android, iOS, Mac |
| 5 | Night Sky | 6.6 | Free plan | Free | Android, iOS, Mac |
| 6 | Star Chart | 6.6 | Free plan | Free | Android, iOS, Mac, Windows |
| 7 | Star Chart | 6.6 | Free plan | Free | Android, iOS, Mac, Windows |
| 8 | DWARFLAB App | 6.5 | Free plan | Free | Android, iOS |
| 10 | KStars | 6.5 | Free plan | Free | Linux, Mac, Windows |
| 11 | Star Walk 2 | 6.5 | Free plan | $0.50/mo | Android, iOS |
| 12 | Spacecraft AR | 6.4 | Free plan | Free | Android, iOS |
| 13 | squishyplanet | 6.4 | Free plan | Free | Linux, Windows |
| 14 | WorldWide Telescope | 6.4 | Free plan | Free | API, Web, Windows |
| 15 | BXA | 6.3 | Free plan | Free | Linux |
| 16 | Seestar App | 5.7 | No | — | Android, iOS, Mac, Windows |
| 17 | Luminos Pro | 5.5 | No | $3/mo | iOS, Mac |
| 18 | Sky Guide | 5.5 | No | — | iOS, Mac |
| 19 | UNISTELLAR App | 5.5 | No | — | Android, iOS |
| 20 | Aladin Desktop | 5.3 | No | — | Windows, Mac, Linux |
| 21 | Halotools | 5.3 | No | — | Linux |
Make your app an alternative to Gaia Sky
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about Gaia Sky alternatives
What is the best alternative to Gaia Sky?
NASA Eyes, number 1 in astronomy apps with a score of 6.8 out of 10. The others here: Celestia, Solar System Scope, Cosmic Watch and 16 more.
What is the best free alternative to Gaia Sky?
NASA Eyes is the best-ranked alternative with a free plan. 14 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.