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Best Astronomy Apps Free to Download for iPhone (2026)
7 astronomy apps on iPhone are free to download; 2 of them sell in-app purchases. Night Sky is the best of them at S tier, rated 4.7 by 497,307 people. The order below is the same S to F ranking as the full list, with the apps that cost money to download removed.
- 1
Free + IAP · ★ 4.7 · 497,307 ratings · score 98Identifies stars, planets, constellations and satellites overhead using an iPhone, iPad or Apple Watch, with AR views… - 2
Free download · ★ 4.6 · 95,884 ratings · score 94Star Walk 2 Plus is a stargazing app that maps stars, planets and constellations in the sky shown on your device screen. - 3
Free download · ★ 4.7 · 25,020 ratings · score 94Stargazing app that shows stars, planets, constellations and satellites in real time as you move your device. - 4
Free + IAP · ★ 4.6 · 9,837 ratings · score 86Interactive 3D model of the Solar System with planets, moons, comets and other space objects, plus educational space. - 5
Free download · ★ 4.7 · 4,351 ratings · score 70Identifies constellations, stars, planets and satellites when you point your phone at the sky. - 6
Free download · ★ 4.8 · 2,827 ratings · score 57Astronomy news app covering space exploration, exoplanet discovery, astrobiology, and the search for life beyond Earth. - 7
Free download · ★ 4.7 · 6,814 ratings · score 43Free reference app with a 3D Solar system model, space mission details, an astronomy event calendar and panoramic.
Questions people ask
- Which astronomy app that is free to download is best on iPhone?
- Night Sky, S tier, #1 overall in astronomy. It is free to download, with in-app purchases.
- Does a astronomy app that is free to download reach S or A tier?
- Yes, Night Sky, Star Walk 2 Plus: Live Sky Map, Star Walk:Find Stars & Planets, Solar Walk Ads+:Planets System.