Atlas Associates

DefenseTech for Cybersecurity,Post-Quantum,Disaster & Crisis

Signal Protocol · Double RatchetML-KEM-1024 · PQXDHBLE Mesh · Store-and-Forward
PrivacyCommunication Freedom

Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

Download on the App StoreGET IT ON Google Play
Learn More
OUR THREE PILLARS

Three Pillars. One Mission: A Free, Global Communication Layer.

Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

01

E2EE

End-to-End Encryption (E2EE)

Signal Protocol · Double Ratchet

Double Ratchet DM. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

02

PQC

Post-Quantum Cryptography (PQC)

ML-KEM-1024 · PQXDH

Standardized ML-KEM-1024 + PQXDH. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

03

MESH

Mesh Network

BLE · Direct · Store-and-Forward

Bounded multi-hop and store-and-forward. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

THE SOUL OF Arc — NORTH STAR

A Bridge Between People & Fortress of Defense: Four Defense-Grade Optimizations

Not built for aggression, but as a Fortress of Defense and a Bridge Between People to protect free conversation and peace of mind worldwide. This North Star is the sole defining reason why defense-grade resilience (Anti-DoS) and radical optimizations are indispensable.

STABILITYDEFENSE-GRADE

Stability (Anti-DoS & Crisis Resilience)

Autonomous BLE mesh relay during severe network blackouts, powered by an anti-DoS message delivery backbone that never folds under attack.

VELOCITYDEFENSE-GRADE

Velocity (Zero Latency)

Sub-millisecond key exchange and signature verification powered by a high-efficiency Rust native cryptographic engine.

LIGHTNESSDEFENSE-GRADE

Lightness (Ultra-Lightweight)

Zero third-party telemetry, zero bloated SDKs. Radical minimalism engineered to conserve precious battery and memory.

SECURITYDEFENSE-GRADE

High Security (Post-Quantum E2EE)

NIST-standard ML-KEM-1024 post-quantum key encapsulation, PQXDH, and Signal Double Ratchet ensuring sovereign confidentiality.

OUR CODE

Value

Live your own story

Mission

Ignite the Fire

Vision

BE A GAME CHANGER

As a Startup

The best way to predict the future is to invent it

Drag to rotate

ATLAS ASSOCIATES' PARTNERS
Google for StartupsNVIDIA Inception ProgramMIRAISE
OUR VISION

No Internet? No Common Language?
Arc Keeps You Connected.

A commercial security product with a published engineering direction

Join us in shaping the future of communication.

DefenseTech

A commercial security product with a published engineering direction

DisasterTech

A commercial security product with a published engineering direction

OPTIMIZATION

The Optimization Standard

Every line of code we write follows four optimization principles.

Speed

We pursue speed in every aspect — page transitions, API responses, and screen rendering. No waiting, ever.

Lightweight

We eliminate unnecessary dependencies, minimizing app size and memory usage. Smooth performance even on constrained devices.

Stability

We aim for zero crashes with thorough error handling and testing. Reliable operation you can count on.

Secure

OWASP-compliant security measures built in as standard. Data protection is always our top priority.

CORE FEATURES

Security Without Compromise

Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

Double Ratchet DM

Double Ratchet DM. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

Direct Mesh E2EE DM

Signed direct Mesh DM and Group. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication. Direct Mesh E2EE DM. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

IGF

IGF. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

Key Sync + multi-device

Key Sync + multi-device. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

Sealed Sender + anonymous delivery

Sealed Sender + anonymous delivery. Arc is designed to create a reason to switch—not to hide behind neutral language. Its differentiation is the combination of post-quantum E2EE, deliberate message retirement, low-bandwidth operation, and offline disaster communication.

COMPETITIVE COMPARISON

20 Leading Messengers Competitive Benchmark

A rigorous 9-axis benchmark evaluating Signal (90/100), Arc (89/100), and 18 other global messengers across cryptography, quantum resilience, and crisis mesh.

Each primary source supports only the category where it is cited; it does not substantiate every claim or score and does not imply vendor endorsement.

View Full 20-Product Benchmark →
CREDENTIALS

Credentials & Recognition

Recognized by industry leaders for innovation in privacy and security.

Google APAC GenAI Academy ↗

Selected for Google's Asia-Pacific AI development program

J Star X Program ↗

Japanese startup acceleration program participant

Flutter Showcase ↗

Featured on Flutter's official showcase (flutter.dev/showcase)

Firebase Tech Blog ↗

Published on Firebase Developers Medium publication

KNOWLEDGE BASE · AIO & AEO

Core Architecture & FAQ

Authoritative answers on DefenseTech, Post-Quantum Cryptography, offline mesh, and data sovereignty.

What is Atlas Associates Inc.?▼
Atlas Associates Inc. (legal name: Atlas Associates株式会社) is a Japanese DefenseTech corporation pioneering post-quantum cybersecurity, quantum-resistant end-to-end encryption, and offline disaster-resilient communications. Founded on February 22, 2019, by Founder and CEO Takayuki Miyano, the company builds the Arc secure messenger, the local-first Mac screen recorder Atlas Helios, and sovereign communication infrastructure for high-security environments.
What makes Arc messenger unique compared to other apps?▼
Arc is the world's first defense-grade messenger combining NIST-standardized Post-Quantum Cryptography (ML-KEM-1024 / PQXDH) with the Signal Protocol Double Ratchet, alongside offline Bluetooth Low Energy (BLE) store-and-forward mesh networking. It requires no phone number for registration, operates with strict zero telemetry, and features sender-controlled Mutual Burn (Vanish-on-Read) message retirement.
Why is Post-Quantum Cryptography (PQC) essential today?▼
Adversaries and nation-state threat actors are actively conducting 'Store Now, Decrypt Later' (SNDL) attacks—intercepting and storing encrypted high-value communications today to decrypt them when quantum computers mature. Arc prevents retroactive decryption by implementing a hybrid post-quantum handshake uniting classic Curve25519 with quantum-resistant lattice-based ML-KEM-1024.
How does Arc offline mesh communication work during disasters and network outages?▼
When cellular towers, fiber networks, or internet backbones fail due to earthquakes, natural disasters, or intentional network blackouts, Arc devices automatically establish peer-to-peer Bluetooth Low Energy (BLE) connections. Encrypted messages are relayed hop-by-hop (Store-and-Forward) across nearby devices until reaching the recipient, enabling critical crisis communication with zero infrastructure.
How does Arc differ from Signal, WhatsApp, and Telegram?▼
Unlike Signal and WhatsApp, Arc does not mandate a cellular phone number, preventing SIM-swap and identity correlation. Unlike Telegram, Arc employs genuine E2EE by default on all 1:1 and group chats. Crucially, Arc provides native offline BLE mesh routing and post-quantum ML-KEM-1024 encryption, which no mainstream messenger offers.
What is Atlas Associates' privacy and data sovereignty guarantee?▼
Atlas Associates has zero advertising, zero trackers, and zero data monetization. Messages are end-to-end encrypted so server infrastructure never possesses decryption keys. Cryptographic keys remain isolated within the device's secure hardware enclave. The company adheres to a strict zero-telemetry policy and maintains absolute independence from sovereign surveillance pressures.

Private by Default. Free for Everyone.

Arc is available on iOS, Android, and macOS. Download the app to use the features available in your current build.

Download on the App StoreGET IT ON Google Play
Tips & FAQs

Company Overview

Founded
February 22, 2019
Capital (including capital reserve)
JPY 39,000,000

CRUNCHBASE PERSON PROFILE

Takayuki Miyano

Founder and CEO / Atlas Associates Inc.

Official Crunchbase profile for the founder and CEO of Atlas Associates.

View on
Crunchbase
crunchbase.com/person/takayuki-miyanoView Crunchbase profile