SimpleX Chat
Intermediate RecommendedSimpleX Chat is one of the best WhatsApp alternatives. Messaging without identifiers: no phone number, no username, no central server.
Information verified on July 22, 2026
Description
SimpleX Chat is the only messenger that assigns no identifiers to users: no number, email, or username. Messages pass through unidirectional queues and are deleted after delivery. Building a social graph is impossible. The protocol is open source and audited.
Key features
- Zero user identifiers
- Unidirectional message queues
- E2E double ratchet encryption
- Ephemeral messages
- Open source and audited
Strengths
- + No identifier required
- + No central server or social graph
- + End-to-end encryption
- + Messages deleted after delivery
Weaknesses
- − Still small user base
- − Less mature than Signal
- − No group video calls
Recommended for
- Users seeking maximum anonymity
- Communication without identity traces
SimpleX Chat vs WhatsApp: the comparison
| Criterion | SimpleX Chat | |
|---|---|---|
| Price | Free and open source | Free |
| Targeted ads on your data | No | Yes (metadata used by Meta) |
| Source code | Open (auditable) | Proprietary |
| Migration difficulty | Easy (2/5) | — |
Comparison
SimpleX Chat is the only messenger without identifiers, where Signal requires a phone number and Threema a unique ID. Element (Matrix) is decentralized but keeps one identifier per account.
Want the complete guide?
“Vivre sans Google” (in French) covers the full journey, service by service, with step-by-step migration guides.
Forthcoming 22/10/2026 from Éditions Eyrolles
Frequently asked questions
How much does SimpleX Chat cost?
Free and open source
How do you switch from WhatsApp to SimpleX Chat?
Estimated difficulty: Easy (2/5). Simple installation. No contact migration: you share an invitation link.
Who is SimpleX Chat for?
Advanced users seeking a messenger without any identifier, or journalists and activists needing anonymity.
One spark a week
Every week in The Spark, I break down one tech story through the privacy lens. And what you can do about it, concretely.
Join 400+ readers. Unsubscribe in one click. Your data will never be shared.