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Threema vs Molly: catalog facts
Threema	Molly
Paid A one-time purchase is required. Business plans are separate.	Free Free and open source; donations via Open Collective
Windows, macOS, Linux, Android, iOS, Web	Android
No phone number or email required; the ID is random Apps are open source and the company is based in Switzerland	Encrypts the local app database with a user passphrase Supports UnifiedPush notifications without Google services
A one-time purchase is required for each platform Smaller user base than the mainstream encrypted messengers	Android only Registration uses a phone number able to receive SMS or calls, or linking as a Signal linked device
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: AGPL-3.0-only
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 20, 2026

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