Secure Comms With Q Call

Get your Q Call license now.

License ZMath Shield and Q Call for one approved public server IP with unlimited users on that deployment. Choose $55/month or $550/year. Standard hosted Matrix-compatible chat on callchat.org remains free to try.

One approved public server IPUnlimited usersAnnual plan saves $110

Buy license Review Q Call

Monthly

Self-hosted ZMath Shield

One public server IP, unlimited users on that deployment, automatic verification, and premium Shield features for the self-hosted server.

$55/month Start monthly

Yearly · Best value

Annual self-hosted license

Same one-IP self-hosted license, paid yearly for simpler admin and fewer renewal events.

$550/year Start yearly

CallChat hosted

Showcase included

Hosted CallChat accounts can use the CallChat Shield showcase here. That is not the self-hosted license.

$0 hosted showcase Open CallChat

Buy and lock the license to your server IP

The public checkout accepts the IPv4 lane first. Use the real public IPv4 address of the server that will run the licensed Shield module. Private network IPs, reserved IPs, loopback, documentation ranges, and carrier-grade NAT ranges are rejected by the license engine.

Contact email Public server IPv4

Deployment domain or hostname

$55/monthRecurring monthly self-hosted license. $550/yearRecurring yearly license.

I understand this license is for one public server IP and grants use of the Shield module, not rights to republish private ZMath source code.

Only trust purchases started from https://callchat.org/license/. The PayPal receiver must be paypal@talktoai.org.

How verification works

One public IP

The license is bound to the public server IP supplied during checkout or owner-issued comp creation.

IPv4 main lane

The public checkout is IPv4-first. IPv6 can be issued deliberately by the owner for suitable deployments.

No NAT ranges

Private, reserved, loopback, documentation, multicast, and carrier-grade NAT ranges fail validation.

Safe public API

The verification endpoint returns entitlement status and safe feature flags for messages, files, vault notes, and Q-Calls, never private Shield internals.

What the self-hosted license unlocks

Protected messages

Shield-aware status and policy checks around the compatible CallChat message layer while normal Matrix chat remains usable.

Files and vault notes

Premium .zme1 protected containers for selected files and vault-style notes, without exposing the private ZMath implementation.

Q-Call posture

Call security status, identity posture, policy evidence, and PQC-ready planning around Matrix/Element WebRTC calls.

One server, unlimited users

The license attaches to one public server IP and covers the users on that approved self-hosted deployment.