Midjourney, the AI image generation startup behind some of the most widely used generative visual tools on the market, has acquired Co-Star, a personalized astrology app with a large consumer following. The announcement came on Thursday, with Bloomberg first reporting the deal, which reportedly closed in spring 2025.

What Co-Star Actually Does

Co-Star is a free mobile app that delivers daily horoscopes and compatibility readings between users. It's not a pure AI play — according to the app's own FAQ, it combines human editorial insight, data from NASA, and AI to generate personalized astrological advice.

The app has built a notable consumer brand, particularly among younger demographics, by blending celestial data with a design-forward interface and often bluntly honest daily readings.

Holz's Strategic Vision

Midjourney founder David Holz has reportedly framed the acquisition as a natural extension of his company's broader mission — one that has already expanded from AI-generated imagery into unexpected territory, including full-body ultrasound scanning technology.

Holz's interest in Co-Star founder Banu Guler and her team appears to be a key part of the rationale, though the full strategic logic hasn't been disclosed publicly. Financial terms of the deal remain undisclosed.

Why This Is Significant

For a company that built its reputation on generative image models, this acquisition is a meaningful signal about where Midjourney sees itself going:

  • Diversification beyond images: Midjourney is clearly not content to remain a single-product visual AI tool.
  • Consumer data and personalization: Astrology apps like Co-Star sit on rich behavioral and preference data — the kind that could inform highly personalized AI experiences.
  • Brand credibility in consumer AI: Co-Star has mainstream name recognition that most AI startups would envy.

Implications for the Broader Market

This move fits a broader pattern of AI infrastructure companies acquiring consumer-facing apps to build direct relationships with end users. Google, Microsoft, and a wave of well-funded startups have all pursued similar strategies — using consumer touchpoints to gather data and drive retention that pure API businesses can't easily replicate.

For startup founders, the lesson here is clear: distribution and audience loyalty are increasingly the scarce resource in AI, not the model itself. Co-Star didn't win because of superior AI — it won because it understood its users deeply and built a sticky daily habit.

Whether Midjourney can translate Co-Star's consumer trust into a coherent product strategy remains to be seen. But the acquisition confirms that the company is thinking well beyond the image prompt box.