The first ever AI-powered astrology app – that understands how people already connect over and talk about astrology. Featured in New York Times, Buzzfeed, i-D, Vanity Fair, Vice, New York Post, Refinery29, and more.

> "Good advice." New York Times
> "This AI can write your horoscope." VICE

• Planet-by-planet compatibility
• Keep track of your friends' signs
• Personality analysis customized to your entire chart
• Real-time updates, as the planets move

> "The planets have aligned to bring you hip af horoscopes." Girlboss
> "Say hello to Co–Star, an app that understands how people already connect with and talk about astrology." Hello Giggles

Did you know —> Typical horoscopes are written only to a person’s sun sign. But that’s only one part of your astrological chart. It doesn’t take into account the moon, other planets in the solar system, or the 12 houses of the zodiac—each of which represents a different part of your life, like relationships, work, and home.

> "Disconcertingly accurate and reflective." HuffPost
> "Download it if astrology is part of your aesthetic." Refinery29

Co–Star's predictions are based on a map of the sky at your exact time and place of birth, coupled with NASA data to track the planets as they move. Then AI creates hyper-personalized horoscopes on a scale previously unimaginable.

> "Millennials ditch religion for witchcraft, astrology..." Drudge Report
> "Download Co–Star right now." Bustle

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What’s New

Version 3.7

Bug fixes and performance improvements

Ratings and Reviews

4.9 out of 5
23.1K Ratings
23.1K Ratings
Givianna ,

Obsessed but $3 for each manual add?!

I am the biggest geek when it comes to astrology just ask any of my friends… True Capricorn to the tea and this app serious fully beautifully and intelligently to pics everything you could want to know about the signs and their interactions with each other. If you want to know more about yourself and your friends etc. download this app!

However my only big concern that I am quite surprised about when I found out is that to manually add somebody, who doesn’t have an iPhone to download the app themselves, it is THREE DOLLARS PER PERSON.... I am sorry but that is absolutely insane if I want to add my three grandparents who don’t have iPhones that’s nine dollars into the app when the app for myself was free. It makes absolutely no sense. I understand having a charge for being able to manually add people but make it three dollars forever not three dollars per entry that is way too absurd.

I hope costar changes this issue because this app is absolutely amazing especially since it’s free to download for iPhone users. I just don’t think it’s fair how much they’re charging to manually add people. Make it a one time fee for that users account PLEASE. It just makes so much more sense and I’m sure all of my fellow post our users would agree with me.

GG245777543236 ,

Best Astrology App I’ve Found

I love everything about this app it is far superior to any of the other apps I’ve downloaded and deleted after feeling they were rather basic and meh. Costar is engaging and interesting especially for someone who wants to learn more about transits and the world beyond your magazine style Sun sign horoscope. My only wish would be... an added capability to manually add someone if you know their birth date and time. I sent invites to many and only got 3 connections because people are wary of this sort of thing. Also it’s fun to check compatibility with friends, family, coworkers and love interests but not all of them are the types to have an astrology app on their phone

Update- they added this feature... but for $3? Come on y’all! I understand it’s a free app and you need to make some cash, but that’s rather absurd. It adds up quickly. My feeling is if you charged $1 you’d have 3-4x the purchases and it would work to your advantage. Also know that other apps let you add and do this synastry for a one time fee of about $6... so you’re not pricing competitively

R.LeeShelton ,


I am on this app at least once to twice a day!!! :) I’ve grown up with astrology all of my life, my father and his fiancé are both astrologists. Ive been exposed to so many different types of astrological programs and there are only a handful that are this accurate! There are so many parts of this app that I just love. The breakdown of each sign correlating with the various houses and planets. It is not just some vague blanketed “daily reading” of each sign but in depth readings of my daily, weekly, monthly and even yearly aspects of life. What makes this app even cooler is being able to invite your friends&family to join and then see the compatibility between you&them. However, I had to knock one star off because the app is only available for iPhones. I was so excited to share it with my father and his fiancé but neither have apple products so they can’t use it, which is the the first thing I thought of when my friend introduced me to this app. Other than than that restriction I LOVE IT!


Co-Star Astrology Society
86.9 MB
Requires iOS 10.2 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Co–Star Astrology Society
In-App Purchases
  1. Add Manually $2.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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