Compare software

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

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