Available now · Android 8.0+

A voice assistant
that's actually yours.

RAI Assistant is a voice-first AI assistant for Android. Flip the Private Memory toggle to switch between blazing ~150 ms cloud voice and full on-device privacy. Built by Aerendir.

What it does

Conversational AI built for phones. Voice-first, low-latency, with real privacy controls.

🎙

Real-time voice

Sub-200 ms round trip in cloud mode via WebRTC + LiveKit. Talk naturally, get answers naturally — no walkie-talkie delays.

🧠

On-device intelligence

Flip Private Memory on and a local LLM takes over with RAG memory. Your conversations never leave your phone.

🔒

Liveness verification

Hardware-backed proofs that a real human held the device when a message was sent. Anti-replay, anti-spoofing built in.

Tap-and-go

Wake-word free. Tap to talk, release to send. No "Hey assistant" awkwardness — designed for how people actually talk to phones.

📲

Cross-device memory

Sign in on any device — your conversation history and memory follow. (Cloud mode only; on-device stays on-device.)

🎯

You're in control

Clear data anytime. Export memory. Toggle voice off. Cancel any time. No dark patterns.

Cloud or on-device, your choice.

One toggle switches between two completely different modes. Both ship in the same app.

Cloud mode

Speed-first

When you want immediate answers from the latest frontier models.

  • ~150 ms voice round-trip via WebRTC
  • GPT-4o-class realtime models
  • Memory synced across devices
  • Encrypted in transit, never used for training
Private Memory mode

Privacy-first

Flip the toggle. Everything runs locally — no audio leaves your phone.

  • Customized Liquid foundation model, on-device
  • Local RAG memory — your data never uploaded
  • Works fully offline
  • One tap to switch back to cloud mode

Built for trust.

Real privacy comes from infrastructure, not promises.

Hardware-backed attestation

Liveness proofs are signed by the Android Keystore using StrongBox or TEE — meaning a real human held the device when the proof was generated. Verifiable by recipients without trusting our backend.

Certificate pinning

The app pins to Amazon's ACM certificate hierarchy. Even with an attacker-installed root certificate, traffic to our backend can't be intercepted.

CASA Tier 2 verified

OAuth scopes for Gmail integration are reviewed under Google's Cloud Application Security Assessment (CASA) Tier 2 — the highest tier for apps requesting restricted user data.

EU-based infrastructure

Backend runs in AWS Frankfurt (eu-central-1). Aurora Postgres with encryption at rest. ElastiCache with TLS. Voice via LiveKit on a hardened VPC.

One-click data export & deletion

GDPR-compliant. Email info@aermob.com with subject "RAI Assistant Data Deletion Request". Actioned within 30 days.

Talk to your phone, for real.

Free to download. PRO and MAX plans unlock cloud voice and higher limits.