Outmake has no accounts of its own, no advertising and nobody else's analytics. Everything it keeps stays in folders on this Mac.
The one thing that can go to a server of Outmake's own is how fast models ran and downloaded and what went wrong, and only while Send Measurements and Errors is on. Setup shows that switch before anything is sent: it starts on, except in the EU, the rest of the EEA, the UK and Switzerland, where it starts off. Change it in Settings › Privacy at any time; turning it off stops it at once. What goes is the chip, the memory, the model's name and size, its speed, and a short code for a download, a reply or a crash that went wrong, never anything you wrote and nothing that identifies you. See What Gets Sent, beside the switch, shows the exact records.
What leaves the Mac is what you send to an agent, and it goes to the company behind that agent, under your own account with them. A model from Models, running on this Mac, never sends anything at all.
Nothing goes to another company until you allow it. The first time something would be sent, Outmake asks, naming the company and what it would get. Your answers live in Settings › Privacy, one switch each, and turning one off stops the very next send.
The full, detailed account of what's stored, what's sent, when, and to whom, is in Help › Privacy, in the Help menu.