An independent index of the mobile apps AI assistants recommend

When people start asking AI assistants "what's the best app for X," which apps come back?

I'm building validcube as an independent research project. It's a monthly index that captures mobile app mentions and recommendations across categories, from AI assistants like ChatGPT, Claude, and Gemini. In my write-ups, I take a macro view: the overall patterns, how they shift over time, and anything unusual I notice in the data.

I run a fixed set of buyer questions across five assistants and record which apps each one names. I repeat the same questions over time and watch how the answers move as models get updated and as apps gain or lose ground on the web.

What it is honest about

The numbers come from APIs on the fast, cheap model tier, not from the consumer app or website, logged in or logged out. The methodology is transparent, including the exact models and the scoring formula. The value is that the same questions are run the same way, in public, by someone with nothing to sell, and repeated so the movement is what you end up reading.

Who runs it

validcube is a project by Wolfgang Peters. Contact details are in the Imprint; how your data is handled is in the Privacy Policy.