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

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