OSD_IconOpen Seizure Detector

Free, Open Source tools to Alert Carers if someone suffers an Epileptic Seizure

View the Project on GitHub

OpenSeizureDetector

Free, open source tools to detect tonic-clonic seizures and alert carers instantly.

💰 Affordable 🔓 Open Source ⚡ Reliable 🔒 Private
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What is OpenSeizureDetector?

OpenSeizureDetector system diagram showing smartwatch, phone, and carers

OpenSeizureDetector uses a smartwatch and an Android phone to monitor movement and heart rate to detect possible tonic-clonic seizures and alert carers immediately.

Designed for affordability and accessibility. It requires a basic Android phone and a compatible watch that costs from just £35. No subscriptions, or internet connection required. It is fully configurable by the user.

✓ ~81% seizure detection rate | ✓ Local alerts via WiFi or SMS | ✓ Continuous self-testing

👤 New Users

Get started with a step-by-step guide to installing and setting up the system.

📱 Existing Users

Usage tips, troubleshooting, data sharing, and latest updates for current users.

💻 Developers

Contribute to the project - source code, architecture, and development guides.

How It Works

⌚
Monitor

Smartwatch measures movement & heart rate

→
📱
Analyze

Android phone processes the data

→
🔔
Alert

Carers notified via SMS or WiFi

  1. Smartwatch continuously monitors acceleration and heart rate
  2. Android phone analyses this data
  3. An alert is raised if patterns suggest a seizure

Our Story

Benjamin

Benjamin

OpenSeizureDetector was created for our son, Benjamin, who has epilepsy.

We wanted a way to know if he was having a seizure while he was at school or away from home, so we could get to him quickly if needed. Commercial seizure detectors were too expensive and required subscriptions.

Over a decade of development, we've created a system that works reliably, costs almost nothing, and is completely open source so anyone can use, modify, or improve it.

Today, families worldwide use OpenSeizureDetector to keep their loved ones safe.

Why Choose OpenSeizureDetector?

💰 Ultra Affordable

Complete system from £35 - no expensive medical device markup. See why in our FAQ.

🔓 Completely Open Source

View the code, modify it, audit it - full transparency and control. Browse source on GitHub.

⚡ Works Offline

No internet needed, no cloud servers, no tracking - just local alerts via WiFi or SMS.

🏥 Evidence-Based

81% detection rate for tonic-clonic seizures based on real user data. Learn more.

Latest News & Updates

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Important: This system is not a medical device and has not been subjected to clinical trials. It is intended to support carers, not replace professional monitoring.