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Featured in the New York Times, Vogue, Vanity Fair, and more.\n> \"Good advice.\" New York Times\n> \"Banging astrology app.\" Dua Lipa\n> \"Connect with people about your astrology sign.\" Conor Oberst\n\nFeatures\n• Add friends to compare natal charts and see your compatibility.\n• Read personalized daily horoscopes.\n• Receive daily push notifications based on your horoscope for the day.\n• Learn how to read your entire birth chart.\n\nPremium Features\n• Ask the stars & get answers to your deepest, darkest questions..\n• See the full natal chart of somebody who doesn’t have the app.\n• Get a complete personalized report on how you love and why.\n• For couples, Eros, a feature that gives you insight on how to navigate everyday relationship situations based on your zodiac compatibility.\n\nThere 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. \n\nFollow us everywhere\n• Instagram: https://www.instagram.com/costarastrology/\n• Tiktok: https://www.tiktok.com/@costarastrology \n• Twitter: https://twitter.com/costarastrology\n\nNeed help? Email us: horoscopes@costarastrology.com\nWe don't do creepy stuff with your data —> costarastrology.com/privacy\nTerms —> https://www.costarastrology.com/terms","facts":{"developer_id":1264782560,"developer_url":"https://www.costarastrology.com","first_released":"2017-10-05T21:33:24Z","support_url":"https://www.costarastrology.com/contact","privacy_url":"https://www.costarastrology.com/privacy","website_url":"https://www.costarastrology.com/","app_version":"5.44","release_notes":"There is much to build. There is even more to fix—especially bugs. 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You can add friends to compare natal charts and see compatibility."},{"q":"What do the premium features cost?","a":"Not stated on the App Store."}],"model":"gpt-6-luna","created_at":"2026-09-29T01:30:14.054Z"},"memberships":[{"list":"birth-chart","list_name":"birth chart","list_status":"active","list_url":"https://apptierlist.com/best/birth-chart/","position":1,"tier":"S","score":98,"components":{"rating":95.5,"votes":94.6,"rank":99.8,"recency":100,"editors_choice":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-26T03:09:12.647Z"},{"list":"astrology","list_name":"astrology","list_status":"active","list_url":"https://apptierlist.com/best/astrology/","position":1,"tier":"S","score":98,"components":{"rating":95.5,"votes":94.6,"rank":100,"recency":100,"editors_choice":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-26T03:09:12.647Z"},{"list":"astrology-readings","list_name":"astrology readings","list_status":"active","list_url":"https://apptierlist.com/best/astrology-readings/","position":1,"tier":"S","score":98,"components":{"rating":95.5,"votes":94.6,"rank":100,"recency":100,"editors_choice":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-26T03:09:12.647Z"},{"list":"horoscope-reading","list_name":"horoscope reading","list_status":"active","list_url":"https://apptierlist.com/best/horoscope-reading/","position":1,"tier":"S","score":97.9,"components":{"rating":95.5,"votes":94.6,"rank":99.6,"recency":100,"editors_choice":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-26T03:09:12.647Z"}],"main_list":"astrology","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"maker":null,"history":[{"id":228325,"at":"2026-10-26T03:22:14.741Z","kind":"tier_changed","list":"horoscope-reading","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"S","reason":"score 95.7","job":"rescore"},{"id":228323,"at":"2026-10-26T03:22:14.741Z","kind":"tier_changed","list":"astrology-readings","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"S","reason":"score 93.3","job":"rescore"},{"id":228059,"at":"2026-10-26T03:09:12.647Z","kind":"membership_added","list":"horoscope-reading","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"active","reason":"Personalized daily horoscopes and daily push notifications are a headline feature.","job":"shadow"},{"id":228058,"at":"2026-10-26T03:09:12.647Z","kind":"membership_added","list":"astrology-readings","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"active","reason":"secondary","job":"shadow"},{"id":114677,"at":"2026-10-16T01:07:51.805Z","kind":"tier_changed","list":"astrology","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"S","reason":"checked from the list's side: ranked #1","job":"rescore"},{"id":114631,"at":"2026-10-16T01:07:51.805Z","kind":"tier_changed","list":"birth-chart","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"S","reason":"checked from the list's side: ranked #1","job":"rescore"},{"id":41752,"at":"2026-10-09T11:50:04.037Z","kind":"tier_changed","list":"birth-chart","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":"B","to":"S","reason":"score 97.6","job":"rescore"},{"id":34124,"at":"2026-10-09T04:06:02.734Z","kind":"tier_changed","list":"astrology","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":"B","to":"S","reason":"score 97.6","job":"rescore"},{"id":15146,"at":"2026-10-09T01:02:25.878Z","kind":"tier_changed","list":"birth-chart","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"B","reason":"score 77.6","job":"rescore"},{"id":14766,"at":"2026-10-09T00:47:25.880Z","kind":"tier_changed","list":"astrology","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"B","reason":"score 77.6","job":"rescore"},{"id":511,"at":"2026-09-18T13:01:00.198Z","kind":"tier_changed","list":"astrology-apps","app_store_id":1264782561,"app":"co-star-personalized-astrology-1264782561","from":null,"to":"S","reason":"score 98.9","job":"rescore"}],"explain":{"method":"Membership is decided by a model judging the App Store listing against the list's definition (and its excludes, for memberships placed or rechecked since they were added to the prompt); 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