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Squirrel vs Sime: catalog facts
Squirrel	Sime
Free Free and open source, with optional donations to the developer.	Free Free and open source under the Apache-2.0 license.
macOS	macOS, Linux, Android
Many Chinese input schemes, from Pinyin to Cangjie and Jyutping Custom input schemes can be written and shared	Supports full Pinyin and T9 layouts Phrase learning and candidate ranking run locally
Configuration is done through text files and takes some learning Documentation is mainly in Chinese	F-Droid build omits the optional handwriting recognizer Linux frontend is documented for Arch Linux
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: Apache-2.0
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 8, 2026

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