Blackmagic Camera can monitor and control other iPhones running it, from a second iPhone, an iPad, its Apple Watch app or a Mac with Apple Silicon and macOS 15 or later. It's official, it's free, and it's the only option here that handles several cameras at once: an iPad shows up to nine.
On the Mac it runs the iPad version of the app, with the same interface. In my test on an Apple Silicon Mac, the picture lagged noticeably more than in bmonitor, froze after a while, didn't play the camera's sound and couldn't turn to portrait. The Apple Watch app shows the framing and audio levels and starts and stops recording, though a watch screen is small for checking focus.
- Good for
- Multicam shoots, filming away from a desk with the Watch, and anyone who wants the official tool.
- Falls short
- Needs a second device. On the Mac, it needs macOS 15 and Apple Silicon, and it's an iPad interface in a Mac window.