Product
Sanket.Chat - Free Secure Messaging App
Sanket.Chat is a free public app for end-to-end encrypted peer-to-peer communication. No advertising. No profiling. No foreign analytics model. Built for privacy-conscious individuals, journalists, field workers, and anyone who needs genuinely private messaging without a consumer platform business model attached to every conversation.
What this means
The platform, in plain terms
Signal Protocol end-to-end encryption - messages are readable only on the sender's and recipient's devices
Zero advertising, zero user profiling, zero metadata monetisation of your communication patterns
Secure one-to-one messaging, private groups, encrypted file sharing, and voice messages
Device-level key storage - private keys are generated on your device and never transmitted
No phone-number directory harvesting - contact discovery that respects user privacy
Available on Android, iOS, Windows, macOS, Linux, and Web - one secure account across all devices
Entry point to the Sanket ecosystem: scale to Sanket.Work or Sanket.Enterprise when your organisation needs admin controls
Zero-knowledge by design
Privacy architecture
The Sanket.Chat privacy model is structural, not contractual. A zero-knowledge server means the platform operator cannot read your messages regardless of what any policy document says. No advertising SDK means no metadata intelligence is being harvested from your communication patterns.
Signal Protocol · PFS · E2E
Security model
Sanket.Chat uses the same Signal Protocol used by security researchers, journalists, and human rights defenders worldwide. The cryptographic model - Double Ratchet with Perfect Forward Secrecy - is open-source, independently audited, and mathematically strong against known attacks.
Cloud · Whitelabel · Air-Gap
Deployment control
Sanket.Chat is the public free tier. When organisations need administrator controls, user provisioning, whitelabel branding, and data residency commitments, Sanket.Work provides managed cloud deployment. For air-gapped on-premise requirements, Sanket.Enterprise scales further.
Zero commercial data extraction
No advertising model
Sanket has no advertising business model and no user profiling. Your communication metadata is not a product. There are no third-party analytics integrations that monetise your operational data.
Completely free - no subscription and no paid feature gate
Signal Protocol encryption, same class as Signal
No advertising or user profiling business model
Multi-platform: mobile, desktop, and web
Deployment path
Choose the right tier for your organisation
Sanket.Chat
IndividualPrivacy-first end-to-end encrypted messaging for users who want Signal-class security without an account linked to a phone number.
Sanket.Work
OrganisationWhitelabel encrypted messaging platform with full admin governance, branding, and managed deployment - your data, your rules, your brand.
Sanket.Enterprise
Critical / ClassifiedAir-gapped on-premise deployment for defence forces, governments, and critical infrastructure where no external dependency is acceptable.
Replace consumer messaging apps with genuine end-to-end encrypted communication that has no advertising model and no metadata intelligence harvest
Protect personal and professional communications from the metadata surveillance built into WhatsApp, iMessage, and other consumer platforms
Access Sanket's secure ecosystem for free and scale to organisational plans when your team needs admin controls and deployment governance
Frequently asked questions
Is Sanket.Chat really free?
Yes. Sanket.Chat is completely free with no subscription, no paid feature gate, and no advertising. The free tier supports individual peer-to-peer secure communication. Organisations needing admin controls, whitelabel deployment, or on-premise hosting should evaluate Sanket.Work or Sanket.Enterprise.
How is Sanket.Chat different from Signal?
Both use Signal Protocol encryption, so the cryptographic guarantees are in the same class. Sanket.Chat is positioned as the entry point to an organisational secure communication ecosystem - you can scale up to managed whitelabel deployment (Sanket.Work) or air-gapped on-premise (Sanket.Enterprise) when your organisation needs admin governance.
What data does Sanket.Chat collect?
Sanket.Chat collects the minimum data necessary to provide the service. Message content is end-to-end encrypted and never accessible to the server. There is no advertising model and no third-party analytics. See the Privacy Policy for a complete data inventory.
Can I use Sanket.Chat on multiple devices?
Yes. Sanket.Chat supports Android, iOS, Windows, macOS, Linux, and Web. Your account and message history synchronise securely across linked devices with end-to-end encryption maintained across all platforms.
Is Sanket.Chat suitable for journalists or activists?
Yes. The Signal Protocol encryption, zero-knowledge server architecture, and absence of advertising or metadata profiling make Sanket.Chat a strong choice for high-risk communication. For maximum security, evaluate whether Sanket.Enterprise's air-gapped deployment model fits your threat model.
Start with a conversation, not a commitment
Tosh Defence Private Limited works with security-conscious organisations through a structured evaluation process. Tell us about your threat model and we will show you the right deployment path.