Zangi - Private Messenger

What Zangi - Private Messenger does

Zangi (legally Secret Phone Inc., Delaware-incorporated, headquartered in Santa Clara, CA) operates a privacy-focused communication platform distributed primarily through the Apple App Store, Google Play Store, and Huawei AppGallery. The core product, Zangi Private Messenger, is a mobile messaging and calling application that replaces personal phone number registration with a 10-digit virtual Zangi number and routes all traffic through its proprietary Zangi Streaming Control Protocol (SCP), an internet transport protocol claimed to carry up to 25% more data than standard RTP. The architecture is serverless and decentralized — only minimal registration metadata is retained server-side; communication content is stored exclusively on user devices and protected by a 3-level encryption stack (RSA-2048 handshaking, AES-GCM dynamic channel encryption, AES-256 with Curve25519/ECDH/HMAC-SHA256 end-to-end encryption). Supporting proprietary technologies include Multichannel Transfer, VPN Tunneling, and Opus HD Codec for low-bandwidth HD calling. Revenue is generated across multiple subscription tiers: a consumer Premium tier at $5/month, per-seat Business Apps at $4-$8/user/month, On-Premises self-hosted deployments with a $2,000 setup fee plus $12-$28/user/month, Networking add-ons at $7-$15/user/month, Telco+ OTT services for telecom operators and MVNOs, and quote-based White Label/Custom-Built app engagements with Basic, Pro, and Enterprise tiers. The company sells to privacy-conscious consumers, enterprise teams, security-sensitive organizations (government, healthcare, financial), telecom operators/MVNOs, and businesses seeking custom-branded platforms, relying on PLG for consumers and direct field sales for enterprise, with no M&A activity, no disclosed strategic partnerships, and only a single $1.5M seed funding round from Renesa Investment Company in April 2014.

Name

Zangi - Private Messenger

Legal name

Secret Phone Inc.

Website

https://zangi.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Zangi (Secret Phone Inc.) is a Santa Clara-based privacy-first messaging platform offering an end-to-end encrypted messenger app for consumers, plus enterprise, on-premises, telecom, and white-label communication products built on its proprietary SCP protocol, monetized via $5/month consumer Premium and per-seat B2B subscriptions.

Ownership category

akta.pro rank

Product category

Secure Messaging & Communication Software

NAICS

All Other Telecommunications (517810)

akta.pro primary industry

Secure/Encrypted Messaging (BPAMACAG)

Keywords

• Encrypted messaging
• Secure voice calls
• Business communication
• On-premises messenger
• White label messaging

Headquarters

HQ city

Santa Clara

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Consumer Premium Subscription: Optional $5/month subscription for Zangi Premium features including original size file transfer, wipe passcode, stealth mode, hidden conversations, and group calls up to 1000 participants. Auto-renews monthly via Apple/Google subscriptions.
2. Business Apps Subscription: Per-user monthly subscription for Zangi Business Apps: $8/user/mo (small teams), $6/user/mo (medium), $4/user/mo (enterprise, 400+ users). Includes secure messaging, calling, conferencing.
3. On-Premises Solution: $2000 setup fee plus per-user monthly subscription: $28/user/mo (small teams), $18/user/mo (medium), $12/user/mo (enterprise). Self-hosted on company servers with 14-day free trial available.
4. Networking Solution: Per-user monthly pricing: $15/user/mo (up to 50 users), $10/user/mo (up to 200), $7/user/mo (up to 400), corporate pricing upon request. Links desk phones to mobile app with 20-day free trial.
5. Custom-built/White Label App: Setup fee plus monthly per-user pricing. Three tiers: Basic (no custom features, no source code), Pro (unlimited custom features, dedicated development), Enterprise (full customization with source code access). Quote-based pricing.
6. Telecom/MVNO Solution: OTT messenger solution for telecom operators and MVNOs including VoIP, SMS, DID, payment systems integration. Fully branded app setup within 5 working days. Revenue through user subscriptions and operational cost savings.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels10 records

Core offering

Zangi develops and operates a private, end-to-end encrypted messaging and calling platform built on its proprietary Streaming Control Protocol (SCP). The offering spans a consumer-facing private messenger app that issues users a virtual Zangi number instead of requiring a personal phone number, as well as a portfolio of B2B products including Zangi for Business, On-Premises, Networking, Telco+, and white-label custom communication apps.

Product overview

Zangi offers a suite of private communication products centered on its core Zangi Private Messenger app. The portfolio includes consumer-focused messaging (Zangi Private Messenger), business communication solutions (Zangi for Business with dedicated app and desktop), self-hosted deployment (Zangi On-Premises), office phone integration (Zangi Networking), telecom/MVNO solutions (Telco+), and custom white-label social platforms. An optional premium subscription (Zangi Premium) adds enhanced features. The technology is built on proprietary Zangi Streaming Control Protocol (SCP) and emphasizes end-to-end encryption, decentralized architecture, and no data collection.

Differentiator

Problem solved

Functional benefit

Brands

• Zangi for Business: Team communication app with private workspace for business messaging, calling, and file sharing.
• Zangi On-Premises
• Zangi Networking
• Telco+
• Zangi White Label

Products and services

• Zangi Private Messenger Privacy-focused mobile messaging and calling application with end-to-end encryption and decentralized architecture. Users are assigned a virtual 10-digit Zangi Number for registration instead of a personal phone number. Targeted at individual consumers for private messaging, voice/video calls, and file sharing.
• Zangi for Business Dedicated business communication app and desktop solution with 2048-bit end-to-end encryption that separates work communication from personal apps. Includes secure messaging, HD video/audio calls, and unlimited conferencing for team collaboration.
• Zangi On-Premises Self-hosted enterprise communication app deployed on the customer's own servers or cloud infrastructure, providing full data privacy with military-grade encryption and no third-party access. Includes a 14-day free trial.
• Zangi Networking Office phone system integration product that links existing desk phone systems to a mobile app via SIP trunk integration. Enables VoIP terminations, virtual/DID numbers, HD audio/video calling, and a web dashboard for analytics. Includes a 20-day free trial.
• Telco+ OTT messenger solution designed for telecom operators and MVNOs. Includes branded app setup, VoIP/SMS integration, HD audio transcoder, backoffice management, and unlimited scaling for telecom businesses. Fully branded app set up within 5 working days.
• Custom-Built Communication App (White Label)

Quantifiable outcome

• 100M+ app downloads across all platforms
• +4 more outcomes

Segments6 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature6 records

Scale indicators1 record

Recent moves4 records

Expansion highlights5 records

Direct peers

• Element (Matrix): Federated, end-to-end encrypted communications built on the open Matrix protocol, offering Element Cloud, on-premises, and white-label deployments that compete head-on with Zangi Business and On-Premises.
• Signal: End-to-end encrypted messenger run by the non-profit Signal Foundation. Direct competitor to Zangi in privacy-first consumer and secure-communication messaging, with comparable E2E encryption and no-data-collection ethos.
• Viber: Cross-platform messenger with native VoIP, HD voice/video calls and end-to-end encryption, plus business features such as Viber Communities and chatbots - overlaps with Zangi's voice/video and group-call product surface.
• Threema: Swiss-based encrypted messenger with a virtual Threema ID (no phone number required), Threema Work for enterprises, and on-prem/white-label options - directly comparable to Zangi's privacy architecture and product portfolio.
• Wickr (AWS): End-to-end encrypted messaging, voice and video for enterprises and government customers, now part of AWS Wickr - a direct competitor to Zangi's secure enterprise and on-premises offerings.
• Session: Privacy-focused messenger that, like Zangi, does not require a phone number and routes traffic through an onion-routed, decentralized network - closely comparable in privacy architecture and target audience.
• Wire: End-to-end encrypted team messaging and conferencing with on-premises deployments and a 'Wire for Government' tier; overlaps with Zangi Business, Zangi On-Premises, and secure conferencing capabilities.

Broad incumbents

• WhatsApp: Global end-to-end encrypted messenger owned by Meta with billions of users, voice/video calling, and WhatsApp Business/WhatsApp API - defines the network-effect ceiling Zangi must overcome in consumer messaging.
• Telegram: Mass-market cloud messaging platform with voice/video calls, large group chats and (optional) end-to-end secret chats; competes with Zangi for privacy-aware users at a vastly larger scale.

Regional players

• Sipgate / Placetel: European VoIP/SIP business telephony providers that link desk phones to mobile and web apps - conceptually similar to Zangi Networking, which integrates SIP trunks, DID numbers, and desk-phone-to-mobile routing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/zangi_messenger
• YouTubeyoutube.com/channel/UCTjX2f7s-j-IPiXrmS5j_Bg
• Facebookfacebook.com/zangimessenger
• LinkedInlinkedin.com/company/zangi-livecom
• Instagraminstagram.com/zangi_messenger

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Zangi - Private Messenger