Compare software

Hammer vs yWriter: catalog facts
Hammer	yWriter
Free Free and open source under the MIT licence.	Free Free software from Spacejock Software.
Windows, Linux, Android	Windows, macOS, Android, iOS
Native apps rather than a web page in a wrapper Runs on phones and desktops	Free with no bundled toolbars or adware Organises chapters, scenes, characters and locations
Issue reporting is steered towards Discord Feature details are sparse in the available documentation	Mobile versions depend on Dropbox for sync macOS version is still being developed
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
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 October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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