Android app · AI

PrivAI

Privacy-focused AI utility for local-first, safer everyday assistance workflows.

Get it on Google Play ↗ Source on GitHub ↗

Secure notes, voice transcription, and document OCR — 100% on-device.

PrivAI is an Android workspace for capturing ideas, transcribing speech, and extracting text from photos. Core processing runs locally on your phone. No account required. No cloud uploads for your content.

Features

Workspace notes — Create, tag, search, and open detailed note views. Everything stays in a local Room database.
Voice transcription — Record and transcribe speech using the device speech recognizer, processed on-device.
Document OCR — Pick a photo from the system image picker and extract text offline with ML Kit (fast mode) or Tesseract (high-accuracy mode). English and Arabic tessdata are bundled.
On-device summaries — Bullet points, keyword highlights, and simple sentiment hints from local NLP — no API keys needed for basic intelligence.
Unified dashboard — Switch between Notes, Audio Transcripts, and OCR Extracts from one home screen.

Privacy

Data	Handling
Notes & transcripts	Stored locally in Room
OCR input images	Read only when you pick one; briefly cached in app storage for processing
OCR output	Extracted text saved locally; images are not uploaded
Summaries	Computed on-device via `LocalTextIntelligence`
Accounts / cloud sync	Not used

Tech stack

UI — Jetpack Compose, Material 3, Navigation Compose
Architecture — ViewModel, Kotlin Coroutines, StateFlow
Storage — Room, DataStore (OCR preferences)
Speech — Android SpeechRecognizer via AndroidSpeechTranscriber
OCR — ML Kit Text Recognition, Tesseract4Android
Testing — JUnit, Robolectric, Roborazzi (Play Store screenshots)

Permissions

Permission	Purpose
`RECORD_AUDIO`	Live voice transcription
`INTERNET`	Required by some on-device ML libraries; user content is not uploaded

OCR uses the system photo picker (GetContent); no storage or media-library permissions are declared.

Play Store assets


./gradlew generatePlayStoreAssets

Tests

# Unit tests (excludes Play Store screenshot tests)
./gradlew :app:testDebugUnitTest

# Play Store screenshot generation (Roborazzi)
./gradlew generatePlayStoreAssets

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