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Icecream Ebook Reader vs Thorium Reader: catalog facts
Icecream Ebook Reader	Thorium Reader
Freemium Free to use, with a paid PRO upgrade.	Free The open-source software is available without a license fee. Hosting, hardware and…
Windows	Windows, macOS, Linux
Opens many formats, including comics Highlights and notes searchable by colour	Supports library imports, bookmarks and adjustable reading layouts.
Windows only No support for DRM-protected books	Format and protection support depend on the book being opened.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: BSD-3-Clause
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 24, 2026	Official website Full listing and sources Checked September 22, 2026

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