VandroLabs

App visibility profile · Edition 1

Is Co–Star recommended by ChatGPT, Perplexity and Gemini?

Co–Star is the most recognisable name in the category and finished fourth on recommendations, at 19 of 50 — and during our fieldwork it lost a clean sweep for the first time.

Measured Segment: Daily horoscope & personal insight Not a client of ours

Vandro Labs is a Generative Engine Optimization agency for astrology and spiritual wellness apps — we work on getting apps named inside ChatGPT, Perplexity and Gemini answers. We measured this app because knowing who the engines name, and why, is the job. What we do · Free audit of your app

The measured numbers

Co–Star was named in 19 of 50 audit runs: ChatGPT 7 of 17, Perplexity 4 of 16, Google Gemini 8 of 17. All runs were conducted in clean, non–personalised sessions between 26 and 31 July 2026.

19/50All engines
7/17ChatGPT
4/16Perplexity
8/17Gemini

Brand fame is not visibility

Co–Star is, for most people outside the category, the astrology app. It was still named in fewer runs than three less famous products, and on one of our audit questions it dropped out of two engines entirely, holding only a mid-list position on the third.

One mechanic worth studying: a large share of the text engines produce about Co–Star traces back to a single durable claim about the astronomical data behind its charts. A short, concrete, verifiable claim becomes the sentence the machine reuses — a seed phrase. Most apps have no such sentence anywhere in their material, which is why the engines describe them in interchangeable filler.

The general lesson for founders: consumer brand awareness and AI recommendation rate are separate assets, and the first does not automatically buy the second.

How that compares

Three apps tied for first place in this edition — CHANI, The Pattern and TimePassages, each at 22 of 50 — followed by Co–Star at 19. Below that the numbers fall away sharply: fifth place was 8 of 50. The full category map is here, segmented by what the user was actually asking for.

How to read this responsibly. These are counts of engine outputs, not a judgement of the software. The engines are not testing these apps; they are summarising pages they can reach, and a large share of those pages are written by the apps themselves. An app absent from our runs is absent from our runs — nothing more.

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Source: AI Visibility Index for Astrology Apps, Edition 1 · CC BY 4.0 · Corrections: ariel@vandrolabs.com