X2Chat vs Threema

Both are end-to-end encrypted messengers. The differences are in what an account requires, what is encrypted and what you can verify.

Written by the X2Chat team. Facts about other apps are taken from their public documentation as of September 2026; tell us at privacy@x2chat.com if something is outdated.

	X2Chat	Threema
Phone number required	No	No
Price	Free	One-time purchase
E2E messages	Yes	Yes
E2E calls	Yes	Yes
Forward secrecy	No	Yes
Open source	No	Yes
Independent audit	No	Yes
Bots / mini-apps	Yes	No
Multi-device	Yes	Desktop beta

Where X2Chat is ahead

Free.
Bots and mini-apps, invite links, group links.
Multi-device with one account.

Where X2Chat is behind

Threema is open source, audited, has forward secrecy and a long track record.

Try X2Chat — free, no sign-up

Messengers without a phone number
X2Chat security model

Updated 2026-09-14 · X2Chat 3.0

X2Chat vs Threema

Where X2Chat is ahead

Where X2Chat is behind

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