You Send.
They Read in
Their Language.
OctoChat is a messaging app that translates every message in real time — automatically, in both directions, across 50+ languages — while keeping every conversation end-to-end encrypted. No manual steps. No language barrier.
Auto-Translate. Always.
You send in yours. They read in theirs.
XChaCha20-Poly1305
Keys on your device. EU servers.
AI Built-In
Writing · Voice · Avatars
One App for Every Conversation — in Every Language
Real-time translation, end-to-end encrypted calls, voice, media, and groups — all in one messaging app.
Real-Time Messaging
Direct and group chats with delivery status, typing indicators, reactions, quote-reply, and message editing.
AI Translation
Auto-translate every incoming message into your language. Pre-send preview so you see how your message reads before hitting send.
HD Video & Voice Calls
End-to-end encrypted WebRTC calls via LiveKit. Picture-in-Picture, call history, background handling on iOS and Android.
Voice Messages
Hold-to-record with slide-to-cancel. AI transcription via Whisper. Speed control, waveform seek, and voice translation.
Rich Media Sharing
Photos, videos, PDFs, Office docs, and audio. In-app viewers, BlurHash previews, media gallery, and auto-download config.
Groups
Unlimited participants. Admin roles, granular permissions, invite via link or QR code, AI-generated group avatars.
Writing Assistant
Spell check, grammar check, and tone enhancement (Professional, Casual, Friendly) — built into the keyboard before you send.
Conversation Management
Pin, archive, mute, and search across all chats. Draft saving, unread counters, and keep-archived mode.
Stickers & Reactions
GIPHY integration with millions of GIFs. AI-suggested sticker reactions based on message context.
Not marketing-speak — it's in the protocol.
Military-grade encryption that never leaves your device, combined with full EU data sovereignty and zero-knowledge key management.
XChaCha20-Poly1305 Encryption
Every message, file, and call encrypted before leaving your device. Encryption keys are generated locally — no plaintext ever reaches the server.
EU Hosted · GDPR & DSGVO
All servers and data storage exclusively within EU jurisdiction. Full GDPR and DSGVO compliance. No data transfers outside Europe.
Biometric Access
Face ID, Touch ID, and fingerprint unlock. Configurable auto-lock timing and screen recording protection on sensitive screens.
Advanced Key Management
PIN-based key recovery restores access without losing message history. Key rotation, reset, and multi-device sync via user-owned PIN.
Zero-Knowledge Architecture
Multi-device key sync via user-owned PIN — not a server secret. Server never sees encryption keys or plaintext.
Certificate Pinning
All API connections use certificate pinning to prevent man-in-the-middle attacks. Split-brain detection alerts when device state diverges.
Encryption Algorithm
XChaCha20-Poly1305
256-bit authenticated encryption. Keys generated on-device, never transmitted. The same algorithm trusted by Signal and WireGuard.
How OctoChat Translates and Assists Every Chat
Real-time translation in 50+ languages, plus AI that assists and summarizes silently in the background — without breaking your flow.
Real-Time Translation
Auto-translate incoming messages per conversation or globally. Pre-send preview shows how your message reads in the target language before you send. Supports English, German, French, Spanish, and more.
Writing Assistant
Spell check, grammar correction, and tone enhancement — Professional, Casual, or Friendly — built into the keyboard. Real-time or on-demand checking mode.
AI-Generated Avatars
Generate a unique profile avatar from a text description. Choose from Cartoon, Realistic, Artistic, Anime, or Minimal styles. Use a reference photo for personalized generation.
Conversation Summarization
Catch up on long group threads in one tap. Ask AI about your chat history using natural language — no manual scrolling required.
Voice Transcription
On-device transcription via iOS SFSpeechRecognizer and Android SpeechRecognizer. AI-powered Whisper backend for higher accuracy on complex audio.
AI Sticker Suggestions
Context-aware GIPHY sticker suggestions based on what you're talking about. React with the perfect GIF without leaving the conversation.
HD Calls. Encrypted.
No Third-Party Service.
All voice and video calls run over WebRTC via LiveKit — end-to-end encrypted, just like your messages. No call data passes through external services.
HD Video Calls
Crystal-clear WebRTC video via LiveKit
Voice Calls
End-to-end encrypted audio
Voice Messages
Hold-to-record with AI transcription
Call History
Filter all, missed, incoming, outgoing
Background Calls
iOS CallKit + Android foreground service
Picture-in-Picture
Keep the call visible while multitasking
Multilingual Concierge for Hotels, Cruises & Customer Service
Guests scan a QR code — no app, no account — and chat in their language while your staff reply in theirs. Plus webhooks, admin controls, and branded codes.
🏨 Multilingual Hotel Concierge
Deploy OctoChat as your hotel's AI-powered concierge service. Guests scan a QR code at check-in — no account needed. Staff communicate in their language while guests read everything in theirs, powered by real-time AI translation. Webhooks connect to your PMS or booking system. Perfect for luxury hotels, resorts, and international hospitality.
- ✓Guest access via QR — no app install
- ✓AI auto-translation for 50+ languages
- ✓Webhook integration with PMS / booking systems
- ✓Branded QR code with hotel logo
🚢 Cruise Ship Concierge
Deploy OctoChat across your entire fleet as the onboard concierge experience. Passengers scan a QR code at embarkation — no app install needed. Shore excursions, specialty dining, spa bookings, daily events, exclusive offers, and cabin service requests — all handled in each guest's native language. Webhook integration with your ship's management system keeps everything in sync across every voyage.
- ✓Fleet-wide rollout with one setup
- ✓Real-time translation for 50+ languages
- ✓Shore excursion booking & port reminders
- ✓Dining, spa & entertainment reservations
- ✓Daily events, offers & activity updates push to guests
- ✓Cabin service & maintenance requests
- ✓Webhook sync with ship management system
- ✓Branded QR per vessel
Incoming Webhooks
Create per-conversation webhooks with unique token-based URLs. Post messages from any external service. Regenerate or revoke tokens without deleting the hook.
Business QR Code
Branded QR code with optional logo upload. Customers scan to start a conversation instantly — no account required.
Guest Access
External users join via QR scan without creating an account. Configure guest permissions per conversation. Full QR expiration tracking.
Invitation Links
Generate invitation links with configurable expiry and max-use limits. Deep-link support — tapping opens the app with pre-filled context.
Admin Controls
Granular admin roles per group: edit info, manage members, manage roles. Admin transfer with last-admin safeguards.
Credits & Time Passes
Credit-based AI features and premium capabilities. Time passes (24h, 7-day) for business accounts with included call allowance.
One App. Every Platform.
Native performance on iOS, Android, and macOS — with full offline support and automatic multi-device sync.
iOS
18+
Android
API 35 / 36
macOS
15+
Web
Coming Soon
True Offline-First
Compose and read with zero connectivity. Messages queue and sync automatically when reconnected.
Multi-Device Sync
One account, seamless across all your devices. Conversation drafts sync everywhere.
Device Management
View and revoke active sessions from any device at any time.
Deep-Link Support
Invitation links and QR codes open directly in the app with pre-filled context.
How Does OctoChat Compare to WhatsApp and Google Translate?
OctoChat is a messaging app with live translation built in. Messengers like WhatsApp need both people to share a language, and translators like Google Translate are not private messengers — OctoChat combines both, end-to-end encrypted and EU-hosted.
| Feature | OctoChat | Google Translate | |
|---|---|---|---|
| Automatic translation of every message | Yes — built-in, both directions, 50+ languages | Manual, selected messages only | Copy-paste into a separate app |
| Different target language per conversation | Yes — per chat or globally | No | No |
| Pre-send preview in the recipient’s language | Yes | No | No |
| End-to-end encrypted messages and calls | Yes — XChaCha20-Poly1305, keys on your device | Yes | No — text reaches the cloud in plaintext |
| EU-hosted, GDPR-compliant servers | Yes | No — Meta, US | No — Google, US |
| No-account guest access via QR code | Yes — built for hotels and cruise ships | No | No |
Frequently Asked Questions
Everything about live translation, privacy, and using OctoChat for your business.
How does OctoChat translate messages in real time?
OctoChat auto-translates every incoming message into your language and shows a pre-send preview of how your message will read in the other person's language before you send it. You type in your language, they read in theirs — no copy-paste, no separate translator app.
Can I set a different translation language for each conversation?
Yes. OctoChat lets you set a target translation language per conversation, or globally. Each chat can translate to a different language at the same time — useful when you talk to people across many countries.
How many languages does OctoChat support?
OctoChat translates across 50+ languages, including English, German, French, and Spanish, with voice-message translation as well as text.
Is OctoChat's translation private?
Yes. Unlike typical cloud translators, OctoChat keeps every message end-to-end encrypted with XChaCha20-Poly1305 and is hosted entirely in the EU, so your translated conversations stay private and GDPR compliant.
Can a hotel, cruise ship, or business use OctoChat for multilingual guests?
Yes. Businesses deploy OctoChat as a multilingual concierge: guests scan a branded QR code with no app install or account, staff reply in their own language, and each side reads in theirs via real-time translation. Webhooks connect to PMS or booking systems.
Is OctoChat a private alternative to WhatsApp, Signal, or Google Translate?
OctoChat combines what those do separately: secure end-to-end encrypted messaging and calls plus built-in real-time translation in every chat — so you do not need a separate translator app, and your messages are never sent to a cloud translation service in plaintext.
Is OctoChat end-to-end encrypted and GDPR compliant?
Yes. Every message, file, and call is end-to-end encrypted with XChaCha20-Poly1305, keys are generated on your device, and all servers are hosted in the EU for full GDPR compliance.
Which platforms does OctoChat support, and is it free?
OctoChat is free to download and is available now on the App Store (iOS) and Google Play (Android), with a macOS version coming soon. Guests can also join a business chat with no account at all.
Download OctoChat
Now on iOS & Android · macOS Coming Soon
Available now on the App Store and Google Play. The macOS version is on its way — secure AI-powered messaging across all your devices.
Android API 35/36 · iOS 18+ · macOS 15+