: A lightweight utility available in the Microsoft Store for users who want a simple countdown for music or long downloads. Built-in Alternatives (No Download Required)

Before downloading extra software, you can use the powerful tools already on your machine: Windows 10 & 11

: Press Win + R , type cmd , and enter shutdown -s -t 3600 to shut down the PC in 3600 seconds (1 hour). Replace -s with -h for hibernate if supported. Shutdown timer for Windows - SleepTimer Ultimate

: For advanced automation, search for "Task Scheduler," create a "Basic Task," and set the program to shutdown.exe with arguments like /s /t 3600 (for a 1-hour shutdown timer).

If you want more flexibility than the standard Windows or Mac settings, consider these popular free tools:

A "sleep mode program" (spiashchii rezhim) typically refers to a utility that schedules when your computer enters a power-saving state or shuts down. While modern operating systems have these features built-in, third-party software offers more precise control, such as countdown timers or triggers based on network activity. Top Software Recommendations

: Offers flexible scheduling options, including daily tasks, specific dates, or simple countdowns. It includes a 5-minute reminder before it puts the PC to sleep.

: A highly-rated, open-source Windows app that lets you schedule sleep, hibernate, or shutdown with a clean, modern interface.