Midjourney Acquires Astrology App Co-Star
Midjourney has acquired Co-Star, the personalized astrology app known for its blunt push notifications and cult following among millennials and Gen Z. The move marks a sharp pivot for the AI image generation company, which has been quietly expanding beyond image synthesis.
Original sourceMidjourney announced it has acquired Co-Star, the astrology app that built a loyal following by delivering unnervingly candid horoscopes to tens of millions of users. Co-Star uses NASA data and natural language generation to produce personalized birth chart readings, and has been notable for its stark, typographic aesthetic and refusal to sugarcoat its outputs — a sensibility that arguably shares some DNA with Midjourney's own willingness to produce unsettling imagery.
The acquisition is the latest signal that Midjourney is repositioning itself as something broader than an image generation tool. The company has previously expanded into generating medical imaging and other non-aesthetic domains, and Co-Star represents a move into consumer identity, personal data, and the lucrative market of self-knowledge apps. Co-Star reportedly has over 20 million registered users, giving Midjourney a substantial consumer footprint that its core product — accessed primarily through Discord and a web interface — never quite built.
What the combined product actually looks like remains unclear. Midjourney has not announced whether Co-Star will continue operating independently, be folded into Midjourney's platform, or serve as infrastructure for a new product category. The strategic logic could run in several directions: personalized image generation tied to birth charts, a broader AI companion product, or simply user base acquisition. The lack of a clear product vision at announcement is either a sign of deliberate sequencing or a deal that moved faster than the roadmap.
For Co-Star users, the immediate questions are around data — birth charts are among the more personal datasets a consumer app can hold, containing birthdates, birth locations, and years of behavioral data tied to astrological identity. Midjourney has not published details on data handling post-acquisition, which will likely be the first thing Co-Star's privacy-conscious user base wants answered.
Panel Takes
The Skeptic
Reality Check
“Twenty million users who gave you their birthdate, birth location, and years of engagement data is a real asset — that's not nothing. But the product thesis here is a blank page: Midjourney hasn't said what it's actually building, and 'personalized image generation meets astrology' is either a genuinely novel category or a meme that ships as a feature and gets abandoned in 18 months. The thing that kills this is Midjourney not knowing what it bought — Co-Star's value is its voice and its community, both of which evaporate the moment users feel the product is being strip-mined for training data.”
The Founder
Business & Market
“Co-Star's core asset isn't the astrology — it's 20 million users who opted in to daily push notifications and kept opening them, which is a retention curve most consumer apps would trade their Series B for. Midjourney's distribution has always been its weak point: a Discord-first product with no real consumer surface area. This acquisition is a distribution bet dressed up as a product story, and that's actually the smarter read of it. The question is whether Midjourney can monetize that user base without destroying the brand trust that made Co-Star's engagement possible in the first place.”
The Futurist
Big Picture
“The thesis here is that personal identity data — not prompts, not style references, but who you actually are — becomes the input layer for generative AI. Birth charts are a proxy for a detailed personality and preference model that users have already consented to share, which is a solved cold-start problem for personalization at scale. If that bet is right, Midjourney just bought a dataset and a behavior pattern that no synthetic data pipeline can replicate; if it's wrong, they bought a novelty app whose core loop doesn't survive the move to a larger platform.”
The Creator
Content & Design
“Co-Star's actual product achievement is a specific voice — sparse, unsettling, oddly accurate-feeling — and a visual language that looks like nothing else in the wellness app space: black backgrounds, serif type, no gradients, no affirmations. That aesthetic didn't happen by accident, and it's the reason the app screenshot goes viral while Sanctuary and The Pattern don't. The risk Midjourney runs is absorbing Co-Star into a generative image product and losing the exact thing that made it worth acquiring — the restraint.”