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Hammer vs bibisco: catalog facts
Hammer	bibisco
Free Free and open source under the MIT licence.	Freemium A free version is available, with a paid edition offering more features.
Windows, Linux, Android	Windows, macOS, Linux, Android, iOS
Native apps rather than a web page in a wrapper Runs on phones and desktops	Tracks characters, scenes and storylines alongside the text Available on desktop and mobile platforms
Issue reporting is steered towards Discord Feature details are sparse in the available documentation	Focused on novels rather than other kinds of writing Some features are reserved for the paid edition
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it 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.