Free secure chat
Start with standard Matrix secure messaging for direct messages and group rooms.
TalkToAI / University of ZERO ecosystem
CallChat ZERO
Your sovereign AI messenger — Matrix-compatible, CallChat-owned.
Use trusted Matrix clients today, connect through the CallChat homeserver, and move toward a branded CallChat app path as the platform grows. Standard secure Matrix chat stays free.
DMs and groups
Create private conversations, team rooms, research rooms, and community spaces.
Element-compatible
Install Element from Google Play, Apple App Store, desktop, or the official web client and choose a custom homeserver.
Own app coming
A CallChat-branded Android app/APK path is planned. The download page will show the APK only when it exists.
Voice and video roadmap
Voice and video are planned after the messaging foundation is stable, tested, and operationally safe.
AI assistant roadmap
Future AI helpers may support onboarding, account help, moderation workflows, and secure admin guidance.
Optional premium layer
CallChat Shield / ZMath vault encryption
Standard secure Matrix chat is the free base. CallChat Shield is the optional premium layer for protected vault workflows, recovery controls, and proprietary ZMath research features.
Shield internals are not published in browser JavaScript, public source, or this landing page. Security depends on strong cryptography, key handling, and operational controls rather than secret algorithms alone.
FreeStandard Matrix secure messaging
OptionalPremium CallChat Shield / ZMath vault features
PrivateProprietary modules stay outside public code
Connect today
Use Element now, CallChat app later.
Install Element, select a custom homeserver, and try callchat.org. If discovery is not available
in your client yet, use matrix.callchat.org as the homeserver.
Readable docs
User, admin, Shield, Zero Bot, Android, and self-hosted manuals in one clean library.
Open manualsFast answers
Homeserver setup, pricing, privacy, Element compatibility, Shield files, and launch status.
Read FAQFull guide
Read the CallChat manual online or download the PDF for offline review and sharing.
Open guide