Star Chart
Star Chart: A free, cross-platform AR sky guide for beginners, families, and casual observers. Ranked #11 of 34 in Astronomy Apps by our editors (6.6/10); pricing: Free plan; best for free cross-platform AR sky identification.
At a glance
- Editor score6.6 / 10
- PricingFree plan
- Best forFree cross-platform AR sky identification
- Free planYes
- Offline accessYes
- Founded2009 · Godalming, Surrey, United Kingdom
- Facts checked21 Sep 2026
Where it wins
- AR identification uses device orientation and GPS
- Offline normal use across Windows, macOS, iOS, and Android
- Tracks comets, meteor showers, satellites, and 20 million-plus stars
Where it doesn't
- No verified telescope control
- No verified integrations
- Features and catalog details may vary by platform or app version
Our verdict on Star Chart
Star Chart is an astronomy and augmented-reality app for identifying and exploring stars, planets, constellations, satellites, comets, and meteor showers. It uses GPS, device orientation, and a 3D model of the universe to match the visible sky. The app suits curious beginners, children, families, and amateur astronomers who want an accessible way to recognize objects overhead. Its free plan includes sky identification, constellations and planets, Guided Tours, Time Shift, and voice control, with normal use available offline.
Its standout strength is the combination of AR identification and educational depth. Users can explore planets, moons, and the Sun in 3D, view over 20 million stars, browse 88 illustrated constellations, and examine the 110-object Messier catalogue. Guided Tours provide structured learning, while Time Shift covers up to 10,000 years and live tracking covers comets, meteor showers, and satellites. These features make Star Chart a good fit for learning and casual observation rather than only quick object lookup.
Platform coverage is broad, with versions for Windows, macOS, iOS, and Android, but it is not positioned as a telescope-control or connected-observatory tool. The product also has platform or version differences: the Google Play listing updated in September 2026 says all features are free with no paywalls or subscriptions, while the Apple listing shows in-app purchases and older catalogue figures. Choose Star Chart for free, cross-platform sky exploration and offline viewing. Choose an alternative if verified telescope control, integrations, or consistent catalog and pricing details across platforms are essential.
Star Chart pricing
All 1 Star Chart plans and prices →
Star Chart fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Offline access | Yes |
| Platform coverage | Cross-platform |
| AR sky view | Yes |
| Telescope control | Not verified |
| Mission tracking | Not verified |
| Catalog size | Not verified |
| Learning content | Yes |
| Deployment | Cloud, Desktop, Mobile |
| Platforms | Windows, macOS, iOS, Android |
| Support | Email, Phone |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | starchartapp.com |
| Facts checked | 21 Sep 2026 |
Alternatives to Star Chart
- StellariumA capable free desktop planetarium with telescope control, scripting, and offline access.9.0
- KStarsA capable free desktop toolkit for sky simulation, planning, and astrophotography.8.2
- WorldWide TelescopeA free, open-source astronomy platform for visualization, tours, and telescope projects.8.2
See all Star Chart alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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