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Hourglass vs Timer: catalog facts
Hourglass	Timer
Free Free and open source under the MIT licence, with no ads or in-app purchases.	Free Free and open source under the GPL-3.0-or-later licence.
Windows	Linux
Natural-language input for durations and target dates Multiple named timers with pause and resume	Can shut down, reboot or suspend when the countdown ends Custom notification text or alarm sound
Windows only Requires .NET Framework 4.8	In maintenance mode with no new features planned Linux only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.