Kontalk
5.9#34 in encrypted messaging appsFree planFree planAndroid
VisitKontalk vs SimpleX Chat
SimpleX Chat
8.0#1 in encrypted messaging appsFree planFree planAndroidiOSAPILinux
VisitWhat both publish
| Fact | Kontalk | SimpleX Chat |
|---|---|---|
| Encryption | The site says client-to-server and server-to-server channels are fully encrypted, and servers cannot decrypt end-to-end encrypted messages. | The network uses end-to-end encryption with continuous post-quantum key exchange for messages and metadata. |
| Open source | The site says all software used in the network, including both server and client software, is open source. | Alternative client applications based on SimpleX Chat code must publish modifications under the AGPLv3 license. |
Kontalk plans
- KontalkFree
SimpleX Chat plans
- FreeFree
- SimpleX ChatFree
Pick Kontalk if…
You want what its maker publishes above — check its page for the details.
Pick SimpleX Chat if…
It suits people seeking messaging without network-assigned profile identifiers, with encrypted messaging, calls, and optional self-hosted servers. Developers can use its protocol SDKs for bots and integrations.