C3 translates astrological math into plain-English behavioral patterns — for friendship, dating, business, and creative work. Math-driven, never AI-invented.
Free to start · iPhone & Android
Behavioral intelligence grounded in centuries-old Western astrology. Concrete language about how you and the people around you actually behave under specific conditions.
No daily horoscope content. No "soulmate" search. No mysticism. No AI inventing what your chart says — only translating what it actually says.
Daily insight on your energy. An AI guide that knows your real chart, not a generic horoscope. Deep compatibility readings for the four relationship types that actually matter.
What today's transits mean for your chart specifically, the days worth watching this week, and a low-pressure mood and energy check-in you can journal alongside.
A Discover deck and your own Orbit, across Friendship, Dating, Business, and Creative. Buttons first — Connect, Pass, or Save — so it stays low-pressure, never a swipe game.
Ask about yourself or anyone you've connected with. The Guide reasons from the real depth of your chart — placements, transits, synastry — not a generic horoscope feed.
They don't need the app. Enter their name and birth data for a full compatibility reading — your partner, your boss, the person you can't quite figure out. Saved reports stay yours.
Your personal hub — natal chart, your archetype, and the planets and patterns underneath how you actually operate. Plain-English, not jargon.
Birth time and location are sensitive, so we treat them that way. Your birth data is encrypted and kept separate from your public profile.
Most apps in this space generate daily content or lean into mysticism. C3 is the only platform built around behavioral translation of real astrological math.
| C3 | Co–Star | The Pattern | Generic Horoscope Apps | |
|---|---|---|---|---|
| Behavioral language (no woo) | ✓ | ✗ | partial | ✗ |
| Full astrological math under the hood | ✓ | ✓ | ✓ | ✗ |
| AI only translates, never invents | ✓ | AI generates | partial | generic content |
| AI guide grounded in your real chart | ✓ | ✗ | ✗ | ✗ |
| Four relationship intent types | ✓ | romantic only | romantic only | ✗ |
| Daily check-in + trends over time | ✓ | partial | ✗ | ✗ |
| Bring-your-own-name reports | ✓ | ✗ | ✗ | ✗ |
| Personal natal Blueprint hub | ✓ | partial | partial | ✗ |
Comparisons based on each app's public feature set as of mid-2026. We respect every team building in this space — we just have a different bet.
Every core tool is free. Catalyst Premium unlocks unlimited reports and the full year-ahead reading.
| Free | Catalyst Premium · $8/mo | |
|---|---|---|
| Daily Pulse — today, the week ahead, check-in + journal | ✓ | ✓ |
| Connections — Discover, Orbit, save, message | ✓ | ✓ |
| Blueprint — your natal chart hub | ✓ | ✓ |
| Cosmic Guide — AI guide on your real chart | Daily limit | Unlimited |
| Bring-your-own-name Reports | 3 reports | Unlimited |
| House Comparisons per Report / Connection | 3 per | Unlimited |
| Catalyst Year — full year-ahead deep reading | Locked | ✓ |
Free to start · Premium unlocks the deeper readings
The App Store and Google Play listings go live at launch. Get on the list and we'll send you an invite the moment they do.
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C3 is the relationship intelligence platform — astrological math, behaviorally translated. Get the app and start reading the patterns.
Free to start · iPhone & Android