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Star Chart
Godalming, Surrey, United Kingdom
What it is
Star Chart uses GPS and a 3D universe model to identify what is visible when you point a device at the sky. Its catalogue maps over 20 million stars across both hemispheres, along with all 88 constellations, solar system planets and moons, the Sun, and the 110-object Messier catalogue. The listing says it tracks comets, meteor showers, and satellites live. Guided tours, voice control, and a time shift reaching 10,000 years into the past or future support exploration beyond the current sky. You can set a location anywhere on Earth, look below the horizon, and zoom into star fields. Normal use does not require an internet connection. Augmented reality mode needs a built-in compass, though manual scrolling is supported on all devices. Star Chart runs on Android, iOS, macOS, and Windows. Its free plan includes every feature and upgrade without subscriptions or paywalls; optional star sponsorship is available. The listing describes it as a companion for curious children and amateur astronomers, and says its maker has been building it since 2009.
For and against
For
- Maps over 20 million stars across both hemispheres.
- Includes all 88 constellations and the Messier catalogue.
- Normal use does not require an internet connection.
- Free plan includes every feature and upgrade.
- Available on Android, iOS, macOS, and Windows.
Against
- Augmented reality requires a built-in compass.
- Optional star sponsorship is available.
The verdict
Star Chart pairs sky identification with extensive catalogue and exploration tools, including offline use. Manual scrolling provides an option on devices without a built-in compass for augmented reality.
Who it suits
It suits curious children and amateur astronomers who want to identify or explore objects in the sky. It also fits users who want offline sky viewing or a time-shifted view.
Plans and prices
Free
Every feature and upgrade included; no subscriptions or paywalls · optional star sponsorship
Read 4 Oct 2026 · play.google.com
On the record
- AR requirement
- Augmented reality mode requires a built-in compass; manual scrolling is supported on all devices.play.google.com · read 4 Oct 2026
- Celestial objects
- It includes all 88 constellations, solar system planets and moons, the Sun, and the 110-object Messier catalogue.play.google.com · read 4 Oct 2026
- Exploration
- Features include guided tours, voice control, and a time shift spanning up to 10,000 years into the past or future.play.google.com · read 4 Oct 2026
- Intended users
- The listing describes the app as a companion for curious children and amateur astronomers.play.google.com · read 4 Oct 2026
- Live tracking
- The listing says comets, meteor showers, and satellites are tracked live.play.google.com · read 4 Oct 2026
- Maker history
- The listing says the maker has been building Star Chart since 2009.play.google.com · read 4 Oct 2026
- Offline use
- The listing says an internet connection is not required for normal use.play.google.com · read 4 Oct 2026
- Privacy disclosure
- Google Play reports that the app shares no data with third parties, may collect personal info, app info and performance, and device or other IDs, and encrypts data in transit.play.google.com · read 4 Oct 2026
- Purpose
- Star Chart uses GPS and a 3D model of the universe to identify what is visible when you point your device at the sky.play.google.com · read 4 Oct 2026
- Star catalogue
- The app maps over 20 million stars across both hemispheres.play.google.com · read 4 Oct 2026
- Support
- The listing gives [email protected] for feedback and support contact.play.google.com · read 4 Oct 2026
- Viewing controls
- Users can view below the horizon, set a location anywhere on Earth, and zoom into star fields.play.google.com · read 4 Oct 2026
