Sherpa Voice vs HookTrace
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Sherpa Voice
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Sherpa Voice is an open-source demo app that showcases what on-device speech and audio AI can do β 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 β 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 β 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 β all processing runs locally on your device PRIVACY No accounts. No tracking. No data collection. Audio never leaves your device.
HookTrace
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HookTrace is the ultimate bridge between your iPhoneβs high-precision GPS and your private automation infrastructure. Tired of cloud services owning your location history? HookTrace puts you back in the driver's seat. It turns your device into a universal GPS sensor that transmits live location data directly to any Webhook URL you specify. Perfect for: β’ Smart Home Automation (Home Assistant, OpenClaw, Jeedom) β’ Workflow Engines (n8n, Node-RED, Zapier) β’ Custom Developer Projects & Dashboards Key Features: β’ FULL PRIVACY: No third-party servers. Data goes from your phone straight to your endpoint. β’ BACKGROUND TRACKING: Runs reliably in the background, optimized for iOS 18+. β’ FULLY CUSTOMIZABLE: Set custom Authorization headers and Device IDs. β’ BATTERY OPTIMIZED: Choose between "Significant Change" mode for extreme battery saving or "Real-time" for high-precision tracking. β’ LIVE MAP: See your current location and breadcrumb trail at a glance. Technical Specs: β’ Standard JSON Payload (Latitude, Longitude, Accuracy, Speed, Battery, Timestamp). β’ Supports HTTPS and custom Auth-Headers. β’ Distance-based filters to prevent unnecessary data spam. Stop sharing your life with big tech. Start hooking your traces to your own home.
Screenshots
Verdict
The clearest difference is update cadence: HookTrace at every 2 days against Sherpa Voice's every 8 months. Sherpa Voice's advantage is iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sherpa Voice ships an update every 8 months, HookTrace every 2 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | Sherpa Voice | HookTrace |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 months | Every 2 days β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 β better | 26.0 |
| Further details β not scored | ||
| Size | 80 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Arthur Breton | Jakob Kramer |
In-app purchases
Sherpa Voice
No in-app purchases
HookTrace
No in-app purchases









