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Schulrechner vs SpeedCrunch: catalog facts
Schulrechner	SpeedCrunch
Free Free and open source under GPL-3.0-only.	Free Free and open source under the GPL.
Linux, Android, Web	Windows, macOS, Linux
Shows equation results as fractions and decimals Supports implicit multiplication	Results update as you type Up to 50 digits of precision
The F-Droid listing describes an early version with unlabeled buttons	Latest advertised release is the long-standing 0.12 Keyboard-centred design may not suit button-only users
Downloadable app, Web application	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-2.0-or-later
No account needed	No account needed
Works offline	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.