# Sherpa Voice

> Sherpa Voice (iPhone/iPad app by Arthur Breton.)

- Source: https://appshunter.io/ios/app/sherpa-voice/id6760437954 (this page in markdown: same URL + `.md`)
- Developer: [Arthur Breton](https://appshunter.io/developer/1703539259)
- Category: Developer Tools, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 60 MB
- Languages: American English
- Released: 2026-03-18
- Data updated: 2026-08-26
- User reviews in markdown: https://appshunter.io/ios/app/sherpa-voice/id6760437954/reviews.md

## What is Sherpa Voice?

Sherpa Voice is an open-source demo app that showcases what on-device speech and audio AI can do — directly on your phone, with no cloud and no internet required.

Whether you are a developer evaluating libraries for your next app, a researcher exploring mobile inference, or just curious about offline AI, Sherpa Voice lets you try 10 speech and audio features hands-on.

WHAT YOU CAN TRY

- Speech Recognition: Transcribe speech to text from files or live microphone input. Multiple languages supported.
- Text-to-Speech: Generate natural-sounding speech from text with various voices and speakers.
- Voice Activity Detection: Detect speech vs silence in real-time audio.
- Keyword Spotting: Listen for custom keywords without full transcription.
- Speaker Identification: Recognize speakers by their voice.
- Speaker Diarization: Figure out who spoke when in a conversation.
- Audio Tagging: Classify sounds — music, speech, environmental noise.
- Language Identification: Detect which language is being spoken.
- Speech Enhancement: Remove background noise from recordings.
- Punctuation: Add punctuation to raw transcripts.

Each feature comes with a downloadable model catalog so you can compare different models for speed, size, and accuracy.

FOR DEVELOPERS

Sherpa Voice is built with React Native and Expo using two open-source libraries:

- sherpa-onnx: C++ inference engine for speech models, with mobile-optimized ONNX Runtime
- expo-audio-stream: Real-time audio recording, analysis, and visualization for React Native

Everything you see in this app can be integrated into your own project. The full source code is available on GitHub — use it as a reference, fork it, or contribute.

HOW IT WORKS

1. Pick a feature (Speech Recognition, TTS, etc.)
2. Download a model from the built-in catalog (one-time, typically 15-100 MB)
3. Use the feature — all processing runs locally on your device

PRIVACY

No accounts. No tracking. No data collection. Audio never leaves your device.


## Version history (last 1 release)

### 1.0 — 2026-03-18

No release notes.

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## More apps by Arthur Breton

- [cantobro](https://appshunter.io/ios/app/cantobro/id6462851708)
- [Audio Playground](https://appshunter.io/ios/app/audio-playground/id6739774966)

All apps by Arthur Breton: https://appshunter.io/developer/1703539259

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*