Amphetamine for Mac

Quick summary

Amphetamine is a macOS utility that prevents a Mac from entering sleep or activating the screensaver during long-running tasks. Created by William Gustafson, it’s aimed at users who run presentations, large file transfers, installations, or any activity that would be disrupted by an unexpected sleep state. The app is lightweight, reliable, and built for uninterrupted work.

User interface and controls

• Lightweight status items let you start or end sessions from the menu bar without opening a full window.
• A clear on/off control and a visible session timer make it easy to see whether the Mac is being kept awake and for how long.
• The design emphasizes minimal distraction: essential controls are exposed up front, while preferences remain a click away.

Modes, scheduling, and activation options

• Choose between unlimited sessions or a fixed-duration session to match your workflow.
• Create schedules that automatically enable sleep prevention at specific times and on selected days.
• Bind activation to contextual triggers such as specific applications or network connections.
• Set battery-level triggers so the app can react differently when power is low or charging.

Performance and resource footprint

• Operates efficiently in the background, using a negligible amount of CPU and very little RAM so normal system performance is unaffected.
• Built to maintain consistent responsiveness even during extended sessions, making it suitable for lengthy transfers or unattended operations.

Platform limits and considerations

• Amphetamine is available only for macOS; there is no native support for Windows or Linux.
• The macOS-only scope means users on other platforms must seek alternative tools to achieve the same functionality.

Final verdict

For Mac users who need to prevent sleep or screensaver activation reliably, Amphetamine is a straightforward and effective choice. Its simple controls, flexible activation options, and tiny system footprint make it a practical utility for maintaining focus during critical or lengthy tasks.