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Flexcil vs Xournal++: catalog facts
Flexcil	Xournal++
Freemium Free to download, with free use available to schools on application.	Free Free and open source under the GPL 2.0.
Android, iOS, Web	Windows, macOS, Linux
PDF reading and note taking side by side Gesture-based annotation suited to a stylus	Pressure-sensitive stylus support on Wacom, Huion and XP-Pen tablets Annotates on top of PDFs while keeping their text selectable
Designed mainly for tablets Homepage gives no details on paid features	Not a PDF editor; it draws on top rather than changing the document Touch and palm rejection need configuration on some tablets
Downloadable app, Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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