Best OpenSpace Alternatives in 2026
Updated
20 platforms from astronomy apps ranked against OpenSpace on the same published basis.
- 1OpenSpace vs Star Walk 2
- 2OpenSpace vs Solar System Scope
- 3OpenSpace vs Celestia
- 4OpenSpace vs Cosmic Watch
- 5OpenSpace vs NASA Eyes
- 6OpenSpace vs Night Sky
- 7OpenSpace vs Star Chart
- 8OpenSpace vs Star Chart
- 9OpenSpace vs DWARFLAB App
- 10OpenSpace vs Luminos Pro
- 11OpenSpace vs Gaia Sky
- 12OpenSpace vs SkySafari
- 13OpenSpace vs BXA
- 14OpenSpace vs KStars
- 15OpenSpace vs Seestar App
- 16OpenSpace vs WorldWide Telescope
- 17OpenSpace vs Spacecraft AR
- 18OpenSpace vs squishyplanet
- 19OpenSpace vs Sky Guide
- 20OpenSpace vs UNISTELLAR App
OpenSpace alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Star Walk 2 | 7.7 | Free plan | $0.50/mo | Android, iOS |
| 2 | Solar System Scope | 7.5 | Free plan | Free | Android, iOS, Mac, Web, Windows |
| 3 | Celestia | 7.4 | Free plan | Free | Android, iOS, Linux, Mac, Web, Windows |
| 4 | Cosmic Watch | 7.4 | Free plan | $0.42/mo | Android, iOS, Mac |
| 5 | NASA Eyes | 7.3 | Free plan | Free | Android, iOS, Linux, Mac, Web, Windows |
| 6 | Night Sky | 7.3 | Free plan | Free | Android, iOS, Mac |
| 7 | Star Chart | 7.3 | Free plan | Free | Android, iOS, Mac, Windows |
| 8 | Star Chart | 7.2 | Free plan | Free | Android, iOS, Mac, Windows |
| 9 | DWARFLAB App | 7.1 | Free plan | Free | Android, iOS |
| 10 | Luminos Pro | 7.1 | No | $3/mo | iOS, Mac |
| 11 | Gaia Sky | 7.0 | Free plan | Free | Linux, Mac, Windows |
| 12 | SkySafari | 7.0 | No | — | Android, iOS, Mac, Web |
| 13 | BXA | 6.9 | Free plan | Free | Linux |
| 14 | KStars | 6.9 | Free plan | Free | Linux, Mac, Windows |
| 15 | Seestar App | 6.8 | No | — | Android, iOS, Mac, Windows |
| 16 | WorldWide Telescope | 6.8 | Free plan | Free | API, Web, Windows |
| 17 | Spacecraft AR | 6.7 | Free plan | Free | Android, iOS |
| 18 | squishyplanet | 6.7 | Free plan | Free | Linux, Windows |
| 19 | Sky Guide | 6.4 | No | — | iOS, Mac |
| 20 | UNISTELLAR App | 6.4 | No | — | Android, iOS |
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Questions about OpenSpace alternatives
What is the best alternative to OpenSpace?
Star Walk 2, number 1 in astronomy apps with a score of 7.7 out of 10. The others here: Solar System Scope, Celestia, Cosmic Watch and 16 more.
What is the best free alternative to OpenSpace?
Star Walk 2 is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.