After years looking for a decent looper app for Logic Pro I had to do it my self (well, with Claude help for coding part ) and it is actually works, and syncs, and almost beautiful. Best $76 spent on AI.
I tested it my M1 and Intel Macs with logic 11 and 12.

I'm keeping it free for the testing period.

https://github.com/checkp/looper-clause

the binaries are here: https://github.com/checkp/looper-clause/releases/tag/1.3.3

https://preview.redd.it/vmncwroarvzg1.png?width=1280&format=png&auto=webp&s=02d2b284ee1be35cc24e1d243c56daf92bba02cb

some copying files and shell magic required just a few steps (see README):

Audio Unit (.component) — Logic Pro, GarageBand, MainStage, AUM

1. Download and unzip LoopStation-1.3.3-AU.zip.
2. Move LoopStation.component to your AU plugins folder:mv ~/Downloads/LoopStation.component ~/Library/Audio/Plug-Ins/Components/ (Or system-wide: /Library/Audio/Plug-Ins/Components/ — requires admin password.)
3. Remove the macOS quarantine flag (required because the plugin isn't notarized):xattr -dr com.apple.quarantine ~/Library/Audio/Plug-Ins/Components/LoopStation.component