Star Chart

The Star Chart application is a globally recognized, award-winning augmented reality (AR) astronomy guide and virtual planetarium, designed to make the wonders of the night sky accessible to curious minds of all ages, with a core target audience of 8–18 year olds. The application transforms a user's mobile device (iOS or Android) into a window to the cosmos, allowing them to simply point their device at the sky, whether day or night, to instantly identify stars, planets, and constellations in real-time. This immersive, educational experience is validated by a high Parent Safety Score of 95, reinforcing its status as a trusted resource for families seeking quality screen time. Star Chart is an AR astronomy guide for ages 8–18 with a low content risk profile due to its educational focus on space and science, supported by a high Parent Safety Score of 95. The AR functionality is generally low-risk, focusing on device sensors for guidance. However, the available information is missing explicit details on the product's specific AI functions, its content moderation policies for any user-generated features, and detailed data and privacy practices.

The app is considered highly age-appropriate given its educational and non-violent subject matter. This foundational safety profile is critical for parents, ensuring the content remains focused on academic exploration without exposure to social interaction or mature content risks. The app is widely used globally by over 30 million people, demonstrating its established reliability as a digital educational tool. The app’s core technology relies on state-of-the-art GPS and a built-in compass to precisely calculate the user's location and the dynamic, real-time position of every celestial body visible from Earth. This sophisticated combination of GPS technology and an accurate 3D model of the universe ensures that users are always seeing precisely what is above them in that moment. The primary point and view functionality is remarkably intuitive, automatically tracking the device's movements to match the real sky and removing the need for clumsy scrolling or manual searches for objects already in the line of sight.

For use from an armchair or for educational presentations, users can also look around the simulated sky using simple finger gestures. Crucially for families, Star Chart is designed to function seamlessly without requiring internet access for its normal usage, enabling spontaneous stargazing from any remote or offline location. Star Chart boasts an extensive and accurate database of the cosmos, which serves as a powerful educational tool for students and hobbyists alike. The app accurately depicts approximately 120,000 to 125,000 visible stars across both the northern and southern hemispheres, offering a truly global perspective on astronomy. All 88 modern constellations are included, featuring beautiful constellation imagery based on the historical artwork of the 17th-century astronomer Johannes Hevelius. Furthermore, the complete Messier catalogue of 110 exotic deep-sky objects is featured, providing rich content for advanced exploration.

Users can fly to and explore all the planets in our solar system, their moons, and the Sun, all rendered in beautiful 3D with impressive visual effects that bring textbook science to life. Tapping on any object in the sky provides instant access to detailed facts, including its distance, brightness, and celestial coordinates. A very powerful zoom function allows users to view the sky in extra detail using intuitive finger gestures. Beyond identification, Star Chart includes powerful tools that deepen the learning experience. The Time Shift feature is a popular advanced function, which allows users to effortlessly shift the sky view up to 10,000 years forward or backward in time, making it an invaluable resource for studying historical or future astronomical events, such as comet paths or planetary alignments. Voice Control, available in English, further enhances hands-free exploration with simple commands like Fly me to the Moon, Go to Saturn, or Look at Andromeda.

The application is fully configurable, allowing parents and children to select which objects, stars, planets, or Messiers, are displayed, tailoring the view to the user's current learning goals. It even allows users to view the sky underneath the horizon to locate the position of the sun or moon before they rise, and manually set their location to find out what the sky looks like from anywhere in the world. The app's foundation as a non-violent, educational resource ensures it remains a highly appropriate choice for the entire 8-to-18 age bracket. While the app is free to download and offers a rich base experience, parents should be aware that the developers offer additional in-app purchases to expand the already vast universe. These available upgrades include tracking specific Comets, observing Satellites (such as the International Space Station and the Hubble telescope), exploring an Extended Solar System to include dwarf planets and more planetary moons, viewing Meteor Showers, and purchasing an Enhanced Constellations or Extended Star Catalog. These optional, paid upgrades, ranging from approximately $2.99 to $12.99, serve as valuable, non-essential enhancements to the educational journey, making the application a cost-effective, expansive, and high-quality digital tool for any family with an interest in space and science.

The app is published by Escape Velocity Ltd and is regularly updated.