Comparison

Sherpa Voice vs HookTrace

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Sherpa Voice

Features
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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.

About

HookTrace

Features
Read full description

HookTrace is the ultimate bridge between your iPhone’s 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

Sherpa Voice3 screens
HookTrace3 screens

Verdict

The call

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences Β· 4 level
Sherpa Voice versus HookTrace: the parameters behind the verdict, then further details
ParameterSherpa VoiceHookTrace
PriceFreeFree
Update frequencyEvery 8 monthsEvery 2 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 β€” better26.0
Further details β€” not scored
Size80 MB13 MB
Age rating4+4+
DeveloperArthur BretonJakob Kramer

In-app purchases

None

Sherpa Voice

No in-app purchases

None

HookTrace

No in-app purchases

Questions

Is Sherpa Voice free?
Sherpa Voice is free to download, with no in-app purchases.
Is HookTrace free?
HookTrace is free to download, with no in-app purchases.
Do Sherpa Voice or HookTrace have ads?
Neither Sherpa Voice nor HookTrace shows ads.
Which is updated more often, Sherpa Voice or HookTrace?
Sherpa Voice ships an update every 8 months, and HookTrace every 2 days. Most recently, Sherpa Voice was updated on November 7, 2026 and HookTrace on October 31, 2026.

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