What Happened—and When
Direct answer: On July 24, 2026, Midjourney announced it had acquired Co-Star, the social astrology app. Midjourney founder David Holz said the deal closed in spring 2026; financial terms were not disclosed. Co-Star founder Banu Guler joined Midjourney as chief design officer. Holz stated Co-Star would remain under Guler's control while her team helps build Midjourney's broader product and design organization.
This is not a rumor. It is Midjourney's first acquisition—a notable move for a company that built its reputation inside Discord and is now pushing into standalone consumer apps.
Bloomberg reported Co-Star had about 4.3 million monthly active users (Sensor Tower data, cited by Bloomberg). Co-Star's own FAQ has long described the product as combining human insight, NASA data, and AI for daily guidance. The acquisition does not change the sky. It may change how astrology apps compete on design, imagery, and distribution.
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Why Midjourney Wanted an Astrology App
Midjourney's core business is generative imagery. Co-Star's core business is daily meaning—short prompts people open on a schedule and share with friends. The overlap is not astronomy. It is reflection: tools that help people name what they feel before they can articulate it.
In his announcement post, Holz framed the deal as building "a broader organization around Product and Design." Guler's public statement emphasized a shared belief that computers can be "tools that reveal our humanity to ourselves"—not replacements for it.
That language matters for astrology readers. The industry is already split between:
- Data-first apps that calculate charts correctly but write generic copy
- Voice-first apps that feel personal but obscure how advice is produced
- Social apps that optimize for sharing over depth
Co-Star sits in the third bucket with strong design credentials. Midjourney sits in generative media with massive brand recognition. The acquisition is a bet that visual identity + daily ritual can be productized together.
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What We Know vs. What Is Only Reported
| Claim | Status | Source |
|---|---|---|
| Deal closed spring 2026 | Confirmed | Midjourney blog, The Verge |
| Guler becomes Midjourney CDO | Confirmed | Midjourney blog, Guler's post |
| Co-Star stays under Guler | Confirmed | Holz announcement |
| ~4.3M monthly active users | Reported | Bloomberg citing Sensor Tower |
| Dedicated astrology image generator | Reported, not confirmed | Bloomberg; Midjourney declined further comment to some outlets |
| Financial terms | Not disclosed | Midjourney |
Do not treat Bloomberg's image-generator detail as a shipped feature. Treat it as a signal of direction: astrology content may get more visual, more generative, and more shareable.
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What This Does Not Mean
It does not mean AI astrology suddenly became "solved." Chart math was never the bottleneck. Interpretation quality, birth-time sensitivity, house systems, and whether daily copy references your transits still separate useful tools from horoscope wallpaper.
It does not mean Co-Star was failing. Acquisitions happen when a larger company wants design talent, audience, and a proven daily habit—not only when a startup is dying.
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It does not replace human astrologers. If anything, flashy AI packaging increases the need for readers who understand what AI can and cannot do with a birth chart. See our AI vs. human astrologers breakdown for where each excels.
It does not automatically affect Lunar Guide users. Different product, different privacy stack, different daily workflow. Comparison is fair; panic is not.
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A Lunar Guide POV: Three Questions Worth Asking
We compare apps for a living. After news like this, we ignore the press-release adjectives and ask:
1. Does the advice reference your chart—or your Sun sign and vibes?
Co-Star's strength has been social comparison and punchy daily copy, not graduate-seminar transit analysis. If Midjourney adds generative visuals, the risk is even more aesthetic personalization without deeper chart specificity. That can be fun. It is not the same as accuracy.
When you evaluate any app post-acquisition, check whether notifications cite transiting planets to natal placements or generic sign blurbs. Our 2026 app comparison guide walks through what to test in a free trial.
2. What happens to your birth data?
Mergers change data processors, retention policies, and marketing lists. Re-read the privacy policy after major corporate events. Co-Star already held sensitive birth information; Midjourney now sits upstream of product decisions.
We are not alleging misuse—only stating the obvious: corporate structure changed. Your due diligence should too.
3. Will imagery blur the line between symbol and fact?
Astrology already fights misinformation from memes and screenshot horoscopes. AI-generated "your chart as art" could be delightful—or it could train users to trust pretty pictures over correct degrees. Labeling matters. So does whether generated art is presented as astronomical fact.
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How Co-Star Compares Today (Before Any Midjourney Features Ship)
Our existing Co-Star review for 2026 still reflects the app on its own merits:
| Strength | Limitation |
|---|---|
| Social compatibility and friend charts | Light on advanced techniques |
| Clean daily habit loop | Copy can feel cryptic without context |
| NASA-backed calculations for core placements | Less depth for transit planning |
| Strong design culture | Not built for long-form chart study |
The Co-Star vs. The Pattern comparison is still the right frame for social astrology. This acquisition does not remove that choice—it may add image-generation as a new column in 2027.
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What to Watch Over the Next 90 Days
Near term (August–November 2026):
- Privacy policy or terms-of-service updates
- New visual features in Co-Star (filters, chart art, share cards)
- Hiring posts for "consumer apps" roles at Midjourney
- Whether daily notifications change tone or frequency
Astrological calendar context: This news landed during Virgo season 2026—a fitting backdrop for "audit the system" energy. The sky's next busy beat is Uranus retrograde in Gemini September 10, a transit that loves to rewrite tech narratives. Industry shake-ups and personal tech audits rhyme.
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If You Are Choosing (or Re-choosing) an App This Month
Use the acquisition as a reminder to run a 30-day test, not to switch on headlines alone:
1. Enter birth data once. Note whether rising sign and houses match a trusted birth chart calculator. 2. Read seven daily notifications. Count how many reference transits vs. mood statements. 3. Check whether advice changes on days you know the Moon shifts sign. 4. Read the privacy policy. Screenshot the date you reviewed it.
Lunar Guide is built for readers who want chart-aware daily context without turning astrology into a social performance. We are not Co-Star; we are also not pretending this deal is irrelevant. Generative AI and daily ritual just shook hands in public.
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Bottom Line
Midjourney buying Co-Star is industry news, not a cosmic verdict. The useful takeaway: astrology apps are now interesting to image-generation giants, not only to wellness investors. That will raise the design bar and the hype volume.
Stay skeptical of features that look like magic. Stay curious about tools that show their work. And if you want a sober baseline for what "AI astrology" even means, start with how AI writes horoscopes—then decide what you need from an app this season.