Sistine builds
AI products.

Two Mac apps that keep your work on your own computer, and say plainly where anything goes when it leaves. Both of them are here.

SistineGPT A private chat. Free with a model on your Mac.

Sistine Path Market research. $9 a month.

What we make

SistineGPTAvailable

Tightening a paragraph, answered by a model running on this Mac. The name at the top left is the model in use; GPT-OSS is one of the free ones you can pick.

A private chat for your Mac, in one ordinary window. It can answer with a model running on the Mac itself, and a chat answered that way never reaches us. The paid Private Cloud plan adds cloud AI that is sealed end to end. A Ghost toggle on the message box makes any chat one that is written to no file. Free with a model on your own Mac · $19 a month for Private Cloud Private Cloud is not open yet, so there is nothing to buy today and the free app is the whole app. Download for Mac Read more about SistineGPT → macOS 14+ · Apple silicon · No account needed for the free app
Sistine PathAvailable

One asset beside the five closest matches in market history, and the paths that followed each of them. The percentages are what followed a similar pattern in the past, not a return anybody is promising you, and the scenarios are history rather than a forecast.

Market research for your Mac. Compare an asset with its five closest matches in market history and see the paths that followed, find the unusually quiet periods in an asset's own record, and screen relative strength from daily moves out to six-month trends, across stocks, indexes, crypto and commodities. $9 a month Download for Mac Read more about Sistine Path → macOS 14+ · Apple silicon · A paid subscription is required to use the app