Help center
Quick answers about permissions, layouts, multi-monitor behavior, snapping, and common setup questions.
Most first-time issues are related to macOS Accessibility permission.
SnapGrid Window Manager requires macOS Accessibility permission to move and resize windows. Go to System Settings > Privacy & Security > Accessibility and make sure SnapGrid Window Manager is enabled. If it is not listed, relaunch the app — it will re-request permission automatically.
No. Accessibility is the only permission SnapGrid Window Manager requires. It does not request access to your documents, camera, microphone, location, or any other system resource.
Yes. SnapGrid Window Manager uses only the standard macOS Accessibility API that is designed for window management tools. Accessibility permission can be revoked at any time from System Settings.
Questions about how layouts work and why they may not appear as expected.
Personalized layouts are saved per display. Make sure your cursor is on the correct monitor when opening the SnapGrid Window Manager menu — layouts created on one screen will not appear in the list for a different screen.
Move your cursor to the monitor you want to change, then click the SnapGrid Window Manager menu bar icon and choose a layout. Each monitor tracks its own active layout independently.
There is no hard limit. You can create as many personalized layouts as you need and name them freely.
Yes. SnapGrid Window Manager works well on ultrawide monitors. You can create custom layouts in the Layout Editor that divide the wide display into three, four, or more vertical zones that suit your workflow.
How snapping works and how to adjust it.
Click the title bar of any app window, drag it toward a zone, and release. SnapGrid Window Manager detects the target zone and automatically resizes and positions the window to fill it.
Snap area scale controls how much of a zone a snapped window occupies. At 100% the window fills the zone completely. At lower values, SnapGrid Window Manager adds uniform margins around the window inside the zone — useful if you prefer visual spacing between windows.
Yes. Certain system windows such as macOS System Settings panels are protected by macOS and cannot be moved or resized by any third-party app. This is an OS-level restriction, not a SnapGrid Window Manager limitation.
Fixes for common issues after display changes or configuration problems.
Disconnect and reconnect the display cable, then quit and relaunch SnapGrid Window Manager from Applications. If the issue persists, use Reset to defaults in Settings to clear the configuration.
Open the SnapGrid Window Manager menu bar icon, go to Settings, and click Reset to defaults. This restores all snapping settings and removes all personalized layouts.
SnapGrid Window Manager may have been quit or it may not have launched at login. Open it from your Applications folder, and consider enabling Launch at login in Settings so it starts automatically.
If you cannot find an answer here, check the full usage guide for step-by-step instructions, or contact the SnapGrid Window Manager team at support@hpy-apps.com.