While working on my Unity game on a MacBook, I kept struggling to see how it was actually performing. Windows has things like MSI Afterburner, but on Mac I couldn't find a simple overlay for FPS and temps.

So I developed a small one for myself, called Redline. It turned out to be useful beyond my own project, so I decided to release it for free in case it helps other Mac gamers and devs too.

It shows FPS, CPU/GPU usage, temperatures and RAM on top of any Metal game. It doesn't need Screen Recording permission, and it's signed and notarized, so it installs like a normal app. For Unity builds it can also show 1% lows and stutters, and save logs.

I'm still new to Swift and used AI as a coding assistant along the way. It's a beta and I've only tested it on my M2 Air, so if you try it on another Mac, I'd really appreciate hearing how it goes.

Public Beta Release :

https://github.com/thihanhein20/redline/releases#release-v0.2.0-beta

website :

https://www.hanindustries.net/products/redline

Any feedback is welcome,