Best Astronomy Apps in 2026
Updated
34 astronomy apps ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
34ranked
3free plans on this page
8 Oct 2026last checked
3 of the 9 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 26 | SkyPortalAndroid · iPhone | One bar | — | 2 of 6 | Free | 5.3 | |
| 27 | Spot the StationAndroid · iPhone | One bar | — | 2 of 6 | Free | 5.3 | |
| 28 | StarmapMac · iPhone | No signal | — | — | 2 of 6 | — | 5.3 |
| 29 | StellariumWeb · Windows · Mac · Linux | Two bars | — | 4 of 6 | Free | 5.3 | |
| 30 | OpenSpaceWindows · Linux | No signal | — | — | 2 of 6 | — | 5.2 |
| 31 | SkySafariWeb · Mac · Android · iPhone | Two bars | — | — | 4 of 6 | — | 5.2 |
| 32 | SpaceEngineWindows | One bar | — | — | 1 of 6 | — | 5.0 |
| 33 | SkyViewAndroid · iPhone | No signal | — | — | 2 of 6 | — | 4.9 |
| 34 | Universe SandboxWindows · Mac · Linux | One bar | — | — | 3 of 6 | — | 4.9 |
Compare all 9 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Offline access | Platform coverage |
|---|---|---|---|---|---|---|---|---|
| 26 | SkyPortal | 5.3 | Free plan | Free | Yes | — | — | mobile |
| 27 | Spot the Station | 5.3 | Free plan | Free | Yes | — | Yes | mobile |
| 28 | Starmap | 5.3 | No | — | Yes | — | Yes | mobile |
| 29 | Stellarium | 5.3 | Free plan | Free | Yes | — | Yes | desktop |
| 30 | OpenSpace | 5.2 | No | — | Yes | — | — | cross-platform |
| 31 | SkySafari | 5.2 | No | — | No | — | Yes | mobile |
| 32 | SpaceEngine | 5.0 | No | — | No | — | — | desktop |
| 33 | SkyView | 4.9 | No | — | No | — | Yes | mobile |
| 34 | Universe Sandbox | 4.9 | No | — | No | — | — | desktop |