One of the most highly recommended free astronomy apps is Star Walk 2. It offers a comprehensive and interactive stargazing experience, allowing users to identify stars, planets, constellations, and satellites by simply pointing their device at the sky. The app features real-time sky maps, augmented reality (AR) views, and detailed information about celestial objects. Additionally, it provides notifications about upcoming celestial events, making it a valuable tool for both beginners and experienced astronomers.
Another popular free option is SkyView Free, which also uses AR technology to help users explore the night sky. It includes a simple interface, augmented reality star maps, and the ability to identify objects in the sky by pointing your device toward them. Both apps are available on iOS and Android devices, making them accessible for most users.