The AI-powered social astrology app, built on NASA planetary data and daily personalized horoscopes, that Midjourney acquired in 2026.
Last verified · 2026-07-25 · by Moe Ameen
Co-Star is a social astrology app that launched in October 2017, built by three former VFILES colleagues — Banu Guler, Ben Weitzman, and Anna Kopp. It takes your birth date, time, and location, maps them against NASA planetary-position data to build a natal chart, and then generates a personalized daily horoscope by comparing where the sun, moon, and planets are today against your chart. The text is produced by a mix of AI and human writers. It is best known for a stark black-and-white minimalist design, blunt daily push notifications, and a friend-compatibility feature that turned it into a share-with-friends habit for a large, mostly young audience.
In July 2026, Midjourney — the AI image and video lab — acquired Co-Star. Reporting published July 24, 2026 by TechCrunch and Bloomberg said the deal had actually closed earlier in the spring and was previously unannounced; terms were not disclosed. Co-Star was cited at roughly 4.3 million monthly active users. Its team of about two dozen joined Midjourney, and CEO Banu Guler became Midjourney's Chief Design Officer, building a cross-functional design, product, and frontend team while Co-Star continues to operate under her control. Bloomberg reported that Midjourney is building its first standalone image-generation app, a notable step for a company that has reached users largely through Discord rather than its own polished app.
A fair note for creators: Co-Star is a personal consumer app, not a content-creation tool. It makes your horoscope; it does not make posts, video, or campaigns. It earns a place here because the acquisition is a signal — Midjourney is buying personalization and a daily-habit consumer surface, and the mechanics that made Co-Star work are exactly the ones a creator can borrow to build a recurring content franchise.
The reason Co-Star matters to a creator isn't horoscopes — it's the machine underneath. One template became a personalized daily ritual millions open every morning, wrapped in a look so consistent it became the brand. That is a content franchise, and Kompozy is how a creator builds one without a two-dozen-person team. Pick a recurring format for your niche — a daily tip, a "today's read," a market note, a coach's prompt — and Kompozy generates the whole run from a single source: HeyGen Persona Shorts so the same face and voice front the series every day, HyperFrames carousels and quote cards that lock a signature style the way Co-Star's black-and-white design became its identity, and captions written in your Persona Brief voice so the tone never drifts.
Co-Star's real moat was cadence — showing up every single day — and that is the part a talented creator usually drops first. Kompozy's autopilot is the cadence engine: schedule and publish the series across the eight social platforms plus blog and email from one review pipeline, or let it run so the daily post ships without you assembling each one. And if you want to work Co-Star's own lane, the standalone image-generation app Midjourney is reported to be building is a natural fit — pair those renders (or any Midjourney image) with Kompozy and one zodiac visual becomes a daily Instagram carousel, a Pinterest set, an X thread, and a newsletter, personalized per platform instead of reposted flat.
Yes. Reporting published July 24, 2026 by TechCrunch and Bloomberg said Midjourney, the AI image and video lab, acquired the social astrology app Co-Star. The deal reportedly closed earlier in the spring and terms were not disclosed. CEO Banu Guler became Midjourney's Chief Design Officer, and Co-Star continues to operate under her control.
It combines your birth date, time, and location with NASA planetary-position data to build a natal chart, then generates a daily horoscope by comparing today's planetary positions against your chart. The readings are written by a mix of AI and human writers. Co-Star launched in October 2017, founded by Banu Guler, Ben Weitzman, and Anna Kopp.
No. Co-Star is a personal consumer app — it produces your horoscope and compatibility readings, not posts, video, or campaigns. To build a daily branded content series with a consistent face and look, use Kompozy: it generates Persona Shorts, carousels, quote cards, and captions from one source and publishes them across platforms on autopilot.
Bloomberg reported that Midjourney is building its first standalone image-generation app; treat that as reported rather than officially confirmed until Midjourney says more. If it ships, you can pair its output with Kompozy to turn a single zodiac image into a daily carousel, Pinterest set, X thread, and newsletter.
The value Midjourney bought was personalization at scale and a daily-habit consumer surface — a repeatable audience relationship, not a new model. The creator takeaway is that a recurring format plus consistent cadence compounds more than any single tool, and Kompozy is the engine that generates and publishes that franchise for you.