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Kalm vs Iremi Breathing App: catalog facts
Kalm	Iremi Breathing App
Free Free and open source under GPL-2.0-or-later.	Free Free and open source.
Linux	Android
Includes several breathing techniques Has regular KDE Applications releases	Several established breathing techniques with adjustable pacing Clear visual cues for inhale, exhale and hold
Linux only	Android only Small project with one main developer
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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