Identify which app is receiving a keyboard shortcut when you're unable to register one, such as in SizeUp. This is a handy tool for troubleshooting shortcut conflicts and understanding why certain shortcuts may not be working as expected. Please note that while it can detect many hotkeys, not all shortcuts may be captured.
The 1.0 version of ShortcutDetective for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free software for Mac is Irradiated Software. We recommend checking the downloaded files with any free antivirus.
From the developer:
ShortcutDetective is an app that detects which app receives a keyboard shortcut (hotkey). This is useful because sometimes you aren't able to register a shortcut in an app like SizeUp and want to know why.
Known Limitations: Not all hotkeys can be detected.