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

Follow us everywhere
• Twitter:
• Instagram:
• Tumblr:

Need help? Send us an email:

What's New

Version 3.0

• DMs are here. Use them to: ask who people are, talk about how rough your love life is, and have people analyze your chart for you.
• Remove someone that you added manually if their chart isn’t up to par.
• Bug fixes, including quick add’s disappearing act.

Ratings and Reviews

4.9 out of 5
15.3K Ratings
15.3K Ratings

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.



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!


Beautiful, But Not Perfect

I think this app is super unique in that it does your entire natal chart, and the way they do a daily horoscope seems infinitely more credible than most (if not all) horoscope apps. However, I wish the transits section was a bit more clear and condensed into one summary rather than multiple sections. Right now, there is so much going on in that part of the app that I feel like I’d have to take notes to understand it all. It gets especially confusing when a transit is said to be going on for many months at a time, but gets lost underneath ones that only last for a day or two. It also is challenging when the same types of transits are repeated multiple times. Either that is indicative of the strength in that situation, or it is some kind of discrepancy. Regardless, it is still very confusing. I have such high hopes for this app, and I hope it continues to improve.


Co-Star Astrology Society
74.5 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.

You May Also Like