SleepSleuth
System sleep monitor
Only for Mac
$1.99
Mac
Ever closed your MacBook only to find it hot and drained of battery an hour later? SleepSleuth is a lightweight menubar utility that unmasks the apps keeping your Mac awake — and now lets you keep it awake on purpose.
While macOS is designed to sleep when you tell it to, background processes, hidden browser tabs, and active downloads can create "Power Assertions" that override your settings. SleepSleuth gives you a dedicated guardian in your menubar to identify these culprits instantly — and a new pin feature to intentionally keep your Mac awake for the apps that need it.
Key Features
- Real-Time Monitoring: Instantly see whether your Mac is free to sleep or something is holding it awake, straight from the menubar icon.
- Identify the Culprits: Get a clear list of every app and process currently preventing sleep, with the specific assertion type and how long it has been active.
- Keep Mac Awake on Purpose: Pin any running app or command-line tool and SleepSleuth will hold a sleep assertion on its behalf for as long as it runs — no caffeinate hacks needed.
- Smart Re-Activation: Pinned processes are remembered across relaunches. When a pinned app comes back, SleepSleuth automatically re-applies the assertion.
- CLI Tool Support: Pin command-line tools like ffmpeg or rsync by executable path, not just GUI apps.
- Process Detail View: Tap any assertion row to see the PID, assertion type, and a live elapsed-time counter.
- Lightweight & Native: Built specifically for macOS with minimal CPU and memory footprint. No telemetry, no bloat.
Visual Status Indicators:
- Yellow icon: Something is keeping your Mac awake (an external app or a pin you set).
- Default icon: All clear — your Mac will sleep normally.
Why use SleepSleuth?
Macs often stay awake for legitimate reasons — but just as often it is a crashed helper tool or a forgotten tab. And sometimes you genuinely need your Mac to stay awake for a long render or download. SleepSleuth gives you visibility and control over both sides of the equation, so your battery is ready when you are.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Fixed an issue where the popover would stay on the last sub-screen after being dismissed, it now correctly returns to the main list.
- Added a "Rate on App Store" button in Settings, along with a native review prompt after engagement milestones.
The developer, Dmitry Osipa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Dmitry Osipa
- Size
- 2.3 MB
- Category
- Utilities
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Dmytro Osipa
