* SkyView Lite: A free stargazing app that uses your phone's camera to show you what stars, planets, and constellations are visible in the sky.

* Star Walk 2: A paid app that offers a more detailed and realistic view of the night sky. It includes augmented reality features that allow you to see stars and planets through your phone's camera.

* Stellarium: A free, open-source planetarium app that offers a highly realistic and customizable view of the night sky.

* NASA App: The official app of NASA offers a wealth of information about space, including news, images, videos, and podcasts.

* Solar Walk 2: A paid app that offers a 3D model of the solar system. It allows you to zoom in on planets, moons, and other objects in space.

* Planets: A free app that offers a simple and easy-to-use interface for exploring the solar system.

* Cosmos: A paid app that offers a comprehensive and immersive experience for learning about astronomy. It includes interactive 3D models, tutorials, and quizzes.

* TheSky Live: A subscription-based app that offers access to real-time data from observatories around the world. It also includes a variety of tools for astronomers, including a telescope control panel and a sky chart.

* Celestron SkyPortal: A free app that works with Celestron telescopes. It allows you to control your telescope, view the night sky, and learn about astronomy.

* Meade StarSeries: A free app that works with Meade telescopes. It allows you to control your telescope, view the night sky, and learn about astronomy.

Astronomy App Catalogs:

* App Store: The App Store is a marketplace for iOS apps. It includes a wide variety of astronomy apps, both free and paid.

* Google Play: Google Play is a marketplace for Android apps. It includes a wide variety of astronomy apps, both free and paid.

* Amazon Appstore: The Amazon Appstore is a marketplace for Android apps. It includes a wide variety of astronomy apps, both free and paid.

* F-Droid: F-Droid is an independent app repository for Android. It includes a wide variety of free and open-source astronomy apps.