Drafted with AI from the Nemos app and its documentation. Details about other apps can change, so check their sites.
Pinterest is a discovery engine. Boards are public by default, secret boards are available, and your saves shape what you are shown next. That is great for browsing, and it means your activity lives in a service built around recommendations and ads.
Nemos has no social layer. Share a pin, a Reel, a link or a screenshot into your library, and only you see it unless you share a folder through iCloud. Text in screenshots is read on your device. AI runs on device by default, and cloud AI runs only if you turn it on.
For extra privacy, lock a folder with Face ID, or hide items so they stay out of search, Spotlight and AI chat. You also lose things. Nemos will not suggest similar images or show you new ideas, and your library is not a public portfolio.
When something else fits better: use Pinterest to find ideas, then save the ones that matter to Nemos. It suits people who want both.