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occm vs Pachli: catalog facts
occm	Pachli
Free Free and open source under the GPL-3.0 licence.	Free Free and open source.
Android	Android
Supports the occm server's custom individual and group direct messages Based on the established Moshidon client	Regular monthly releases Available on Google Play, F-Droid and GitHub
Built for one specific Mastodon server Small project with few contributors	Android only Needs an account on a fediverse server
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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