Co–Star Personalized Astrology

4.6
94.9K reviews
5M+
Downloads
Editors' Choice
Content rating
Teen
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About this app

Co–Star is the astrology app that deciphers the mystery of human relations through NASA data and biting truth. 2x App of the Day. Featured in the New York Times, Vogue, Vanity Fair, and more.

> "Good advice." New York Times
> "Banging astrology app." Dua Lipa
> "Connect with people about your astrology sign." Conor Oberst

Features
• Add friends to compare natal charts and see your compatibility.
• Read personalized daily horoscopes.
• Receive daily push notifications based on your horoscope for the day.
• Learn how to read your entire birth chart.

Premium Features
• See the full natal chart of somebody who doesn’t have the app.
• Get a complete personalized report on how you love and why.
• For couples, Eros, a feature that gives you insight on how to navigate everyday relationship situations based on your zodiac compatibility.

There are no bad zodiac signs, only complicated dynamics. Co–Star uses astrology as a framework for understanding ourselves and our relationships; a shortcut to real talk in a sea of small talk. We use NASA data to chart the exact location of the stars in real-time. This is then interpreted by real human astrologers who collaborate with AI technology to produce the birth chart and daily horoscopes you read in the app.

Follow us everywhere
• Instagram: https://www.instagram.com/costarastrology/
• Tiktok: https://www.tiktok.com/@costarastrology
• Twitter: https://twitter.com/costarastrology

Need help? Email us: horoscopes@costarastrology.com
We don't do creepy stuff with your data —> costarastrology.com/privacy
Terms —> https://www.costarastrology.com/terms
Updated on
Jan 13, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Messages and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.6
93.8K reviews
TGabrielC13
November 17, 2025
Could be better. My friend and I both have the free versions. she has an apple phone, mine's google, so she has the apple version and I'd say hers is 100% better. The google version feels like an afterthought. it's half assed if I'm putting it bluntly which is disappointing. my friends 'day at a glance' is always so thoughtful and detailed. she gets a paragraph. my version? i get one whole sentence if I'm lucky. really doesnt motivate me to want to open the app to even look at it.
20 people found this review helpful
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Angelica Loveliest
December 15, 2025
This app is SOO NOT worth it!!! It's just another one of those typical money traps. I got a relationship analyst, from a FREE website, and that is one of those aspects in my chart, I wanted to learn about most, and ofc, it was locked behind a pay wall, on this app....Secondly, I have to use my phone number or Facebook to sign in, which I personally find inconvenient, and weird. Not my favorite. And third, idkw we can't access some of these features, on the web. There's DEFINITELY better....
8 people found this review helpful
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Mila Cook
August 4, 2025
I think I didn't realize how important and dedicated the team's work was in development in this app and website, and how many people like myself it's helped. I previously said in a review, that I can't find but will delete, rescind, etc. This is a top tier collection of everything you need for something as delicate, volatile, and intricate as the finer details that make up who we are and see ourselves. Thank you for co-star
43 people found this review helpful
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What’s new

To improve is to change. To be perfect is to change often. Update to the latest version to see bug fixes.