Nulla: Private Chat & Wallet

Nulla

About this app

Nulla: The Zero-Knowledge Messenger & Crypto Wallet

Nulla means "zero" in Latin. No phone number. No email. No ads. No selling your data. Nulla is a private, end-to-end encrypted messenger with a built-in multi-chain crypto wallet — everything you need to talk, share and pay, without giving up your identity.

🛡️ PRIVATE BY DESIGN

• 100% Anonymous Sign-Up: no phone number, no email, no ID. Pick a username and start chatting.
• End-to-End Encryption: messages, photos, videos, documents, voice messages and location are encrypted on your device before they leave it. Only you and your recipient hold the keys.
• Post-Quantum Protection: hybrid key exchange (ML-KEM-768 + X25519) with AES-256-GCM, built to resist tomorrow's quantum computers, not just today's attackers.
• Memory-Only Chats: local database persistence is disabled. Readable messages live in RAM while the app is open; our servers only store encrypted blocks we cannot read.
• Recovery Key, Not Passwords: your account is restored with a unique cryptographic key. We store only a one-way hash, so no one — not even us — can recover a lost key.
• Anti-Spy: screenshots and screen recording are blocked at the system level.
• Ghost Mode: hide chats from your main screen until you search for them.
• Chat PIN Lock & Dead Man's Switch: lock sensitive chats with a PIN, or let your account erase itself if you stop checking in.

💬 EVERYTHING A MODERN MESSENGER NEEDS

• Voice & video calls
• Voice messages with waveform
• Photo, video and document sharing
• Live location sharing
• Disappearing messages
• Stickers, including your own custom stickers
• Stories and Nulla Social: posts, reels and profiles
• Optional live translation · app available in 11 languages

👥 POWERFUL COMMUNITIES

• Public and private groups with unique names
• Roles: founder, co-founder, admin and moderator
• Moderation tools: ban with a reason, timed mute, slow mode, join approval
• Group Treasury: a shared NullaCoin balance managed by the founders, with two-founder approval for spending
• Paid Groups: traders, coaches and creators can charge a monthly membership fee — members approve the first payment with their PIN and can leave anytime
• Paid Content: share photos, videos or documents that unlock only after payment

💰 BUILT-IN MULTI-CHAIN CRYPTO WALLET

Send, receive and hold your crypto without leaving your encrypted chats.

• Supported networks: Bitcoin (BTC), Ethereum (ETH), Tron (TRX), Tether (USDT on TRON), Solana (SOL), USD Coin (USDC on Solana), Sui (SUI), XRP and Stellar (XLM)
• Self-Custody: your wallet keys are generated and stored on your device. We cannot access, freeze or move your on-chain funds.
• Transfer PIN: every transfer is protected by a PIN verified on our servers, with brute-force protection.
• Live prices and full transaction history

🪙 NULLACOIN (NLA)

NullaCoin is Nulla's in-app token. Use it to publish posts, tip creators, unlock paid content, join paid groups and fund group treasuries. Send NLA right inside a chat, request a payment or drop a red envelope for your group. Buy NLA with USDT or other supported coins and sell it back to USDT anytime. NLA balances are managed by Nulla's servers, separately from your self-custody wallet.

🆘 OFFLINE EMERGENCY MESH

No internet or signal? Nulla phones nearby can connect over Bluetooth and Wi-Fi Direct to share messages, location and SOS alerts, hopping device to device. Not a replacement for emergency services — always call your local emergency number when you can.

🔒 WHY NULLA?

Most free messengers make money from your metadata. Nulla is funded by its users, not advertisers.

• Delete messages for everyone at any time
• Delete your account and all your data instantly
• Block users, hide your profile from search and turn off read receipts

Private messaging, secure calls and a crypto wallet — in one app that knows nothing about you.

Download Nulla and take back your privacy.

What’s new

Various user experience enhancements and security improvements have been made.