EpiWatch Core
FDA-Cleared Seizure Monitor
Free · In‑App Purchases
Clinically validated tonic clonic seizure detection, alerting, monitoring, and logging. The only FDA-cleared seizure detection app for Apple Watch.
EpiWatch: Seizure Monitoring and Alerting
FDA-cleared Seizure Detection
SAFETY, INDEPENDENCE, AND PEACE OF MIND
Take control of seizure safety with EpiWatch, the only clinically validated and FDA-cleared tonic-clonic seizure detection
and alerting app for Apple Watch. EpiWatch is available in the U.S. Seizure detection, monitoring, and caregiver alerting require a prescription from a U.S. clinician.
CLINICALLY VALIDATED SEIZURE DETECTION
EpiWatch is powered by an FDA-cleared seizure detection algorithm that detected 98% of tonic-clonic seizures in clinical
trials with a false alarm rate of .08 per 24 hour period.
SUPPORTS INDEPENDENT APPLE WATCHES (FAMILY SETUP)
EpiWatch supports Apple's Family Setup. This means you can set up a cellular Apple Watch for a loved one using your own iPhone and their EpiWatch account, giving them full access without them needing a smartphone of their own.
ALERTS CAREGIVERS VIA E-MAIL, PHONE CALL, OR TEXT
When EpiWatch detects tonic-clonic seizure activity, it sends seizure alerts to the EpiWatch caregiver list by phone call,
text, and e-mail directly over the watch's wi-fi or cellular connection.
CUSTOMIZABLE CAREGIVER ALERT PREFERENCES
Add as many caregivers as you need to your alert network with no extra cost. Customize each caregiver's alert
preferences for notification.
ALERTS CAREGIVERS TO YOUR LOCATION
EpiWatch includes the watch wearer's GPS location with alert messaging.
USE HELP BUTTON FOR MANUAL ALERTING
Manually send alerts to contacts by pressing the "HELP" button for assistance.
FREE SEIZURE LOGGING AND DIARY
EpiWatch includes free seizure journaling and manual logging, available without a prescription or subscription. Manually log seizure events, record auras, and add clinical details such as seizure type, duration, and severity. With prescription-activated monitoring, automatic detections and manual alerts can also appear on your calendar.
MONITORING STATUS NOTIFICATIONS
Status notifications on the watch provide confirmation that monitoring is active. Send test alerts to caregivers at any time.
APPLE WATCH COMPLICATION
Add the EpiWatch complication to your Apple Watch face for quick access to the app and at-a-glance monitoring status.
SIMPLE TO SUBSCRIBE
Subscribe directly on the Apple App store. Billing is through your Apple account.
REGULATORY AND COMPLIANCE
The EpiWatch Monitoring System is an FDA-cleared (K243515) software-only mobile medical application intended for use
with a compatible wrist-worn device as an adjunct to seizure monitoring of adults and children ages 5 and up. EpiWatch requires a U.S. clinician's prescription and an active subscription for seizure detection, monitoring, and caregiver alerting.
Refer to the EpiWatch Instructions for Use and Product Manual for detailed instructions, warnings, precautions, and
possible risks related to EpiWatch. EpiWatch should never be used to make medical or diagnostics decisions. Always
seek your doctor's advice before making any medical decisions.
The EpiWatch software on the watch requires Wi-Fi or cellular connectivity, or Bluetooth® to the companion iPhone® , for
alert transmission.
Portions of EpiWatch are Licensed Work, copyright © 2020 Johns Hopkins University all rights reserved, and contain
valuable confidential and proprietary information of Johns Hopkins University and is subject to applicable licensing
agreements and any unauthorized reproduction, transmission, or distribution of this Licensed Work is a violation of
applicable laws.
EpiWatch and the EpiWatch logo are trademarks or registered trademarks of Johns Hopkins University in the U.S. and
other countries and are used under license by EpiWatch, Inc. All other trademarks used herein are the property of their
respective owners.
Product features are subject to change. Copyright © 2026 EpiWatch, Inc.
more I submitted my prescription and it says up to 3 days. It should not take so long but as soon as we get it installed on my Apple Watch I will update with how well it works and update stars
Developer Response Hello @good angels. We are always working to improve our workflow, and appreciate your feedback. Our prescription review time has been an area of focus for reviewing promptly, and generally is completed sooner than 3 days. We will also let you know if there is any issue with your prescription (via email). Always feel free to reach out to our customer support team at troubleshooting@epiwatch.comThe EpiWatch team
I submitted my prescription and it says up to 3 days. It should not take so long but as soon as we get it installed on my Apple Watch I will update with how well it works and update stars
Hello @good angels. We are always working to improve our workflow, and appreciate your feedback. Our prescription review time has been an area of focus for reviewing promptly, and generally is completed sooner than 3 days. We will also let you know if there is any issue with your prescription (via email). Always feel free to reach out to our customer support team at troubleshooting@epiwatch.comThe EpiWatch team
Purchased this for my 12-year-old. Because he has an AppleWatch but no iPhone (his watch is on a family share thru my iPhone) it cannot download to his watch. The app requires the user to have BOTH a watch and an iPhone. Completely useless for a kid with a watch on a family plan. The website quotes are all about kids using it, but I have found it impossible to install on my child’s AppleWatch. I’ve sent emails to troubleshoot and left a voicemail but no one responds. Misleading and terrible customer service.
Developer Response Hi @Liz - the newer version of the EpiWatch app (EpiWatch Seizure Monitor) does allow the utilization of the standalone child phone functionality. Please download the newer app version to use this! For questions, reach out to us at troubleshooting@epiwatch.com.The EpiWatch team
Purchased this for my 12-year-old. Because he has an AppleWatch but no iPhone (his watch is on a family share thru my iPhone) it cannot download to his watch. The app requires the user to have BOTH a watch and an iPhone. Completely useless for a kid with a watch on a family plan. The website quotes are all about kids using it, but I have found it impossible to install on my child’s AppleWatch. I’ve sent emails to troubleshoot and left a voicemail but no one responds. Misleading and terrible customer service.
Hi @Liz - the newer version of the EpiWatch app (EpiWatch Seizure Monitor) does allow the utilization of the standalone child phone functionality. Please download the newer app version to use this! For questions, reach out to us at troubleshooting@epiwatch.com.The EpiWatch team
Improvements:
- Significantly reduced battery drain during monitoring.
- Faster, more reliable syncing between your watch and phone.
- Streamlined seizure reports.
- Security and privacy improvements.
Bug Fixes:
- Fixed an issue where the app could show a connection error at launch.
- Fixed incorrect messaging when a monitoring session stopped.
- General stability and reliability improvements.
1.3.1 Oct 7
This update improves monitoring reliability and connectivity:
Fixes an issue where monitoring could stop capturing data while still showing as active.
More reliable watch–phone linking, with clearer guidance when you need to sign in.
Faster, more accurate connection status, and a smoother recovery when your connection returns.
General stability improvements.
1.3.0 Sep 25
Improvements:
- Significantly reduced battery drain during monitoring.
- Faster, more reliable syncing between your watch and phone.
- Streamlined seizure reports.
- Security and privacy improvements.
Bug Fixes:
- Fixed an issue where the app could show a connection error at launch.
- Fixed incorrect messaging when a monitoring session stopped.
- General stability and reliability improvements.
1.2.9 Sep 1
Improvements:
- Significantly reduced battery drain during monitoring.
- Faster, more reliable syncing between your watch and phone.
- Streamlined seizure reports.
- Security and privacy improvements.
Bug Fixes:
- Fixed an issue where the app could show a connection error at launch.
- Fixed incorrect messaging when a monitoring session stopped.
- General stability and reliability improvements.
1.2.8 Aug 31
What's New:
- Added a Contact Support option in Settings to submit support requests directly from the app.
Bug Fixes & Improvements:
- General reliability improvements.
1.2.7 Jul 22
What's New:
- Redesigned onboarding to make setup clearer and easier to complete.
- Added guided education screens for monitoring, alerts, caregivers, reports, and Apple Watch setup.
- Moved seizure journaling and manual logging earlier in setup, so users can access them before prescription review is complete.
- Added a new Apple Watch complication.
Bug Fixes & Improvements:
- Improved login reliability so sessions are handled more smoothly.
- Fixed issues that could cause users to be signed out unexpectedly.
- Improved calendar loading.
- Improved Apple Watch monitoring reliability.
- General bug fixes and stability improvements to keep the app running smoothly.
1.2.6 Jun 30
Bug Fixes & Improvements
- Fixed a display issue so the status text is now fully visible beneath the system time.
- Resolved an issue with the alarm feature that caused the app to crash on some devices.
- General bug fixes and stability improvements to keep the app running smoothly.
1.2.5 Apr 19
What's New
- Added a new prompt to help you easily start monitoring for automated seizure detection.
- Improved Apple Watch integration so that starting a session no longer interferes with your daily Activity rings.
Bug Fixes & Improvements
- Alert times now correctly display in your local time zone instead of UTC.
- Resolved an issue that caused unnecessary, periodic notifications on your Apple Watch.
- Fixed a bug where location data was missing from phone test alerts.
1.2.4 Apr 9
Background Alarms
- Seizure alarms will now sound even when you background the app during a manual alert when monitoring is not active.
Seizure Diary & Calendar:
- A full seizure history is now available directly in the app. Browse by year or month, view color-coded event indicators, and tap any day to see a detailed timeline of detections, auras, and manual entries.
- Log seizures and auras you experienced outside of a detection. This includes type, duration, severity, level of awareness, and whether you had a warning aura beforehand.
- Classify automated detections as seizure, false positive, or unknown directly from the calendar. Add or edit clinical details on any event at any time.
- A dedicated "To Classify" queue surfaces all pending detections in one place.
Regulatory & Compliance:
- Unique Device Identifier (UDI) is now displayed in Settings.
Bug Fixes & Improvements:
- Resolved an issue where the calendar could display events in the wrong time slot after traveling across time zones
- Fixed a rare crash that could occur when rapidly switching between months
- General stability and performance improvements
1.2.3 Mar 18
Standalone Watch Support:
- Link any Apple Watch to EpiWatch without iPhone pairing. Generate a 6-digit code on your iPhone, enter it on the watch, and you're connected. Ideal for Family Setup watches, secondary devices, or providing monitoring for a loved one. Manage all linked devices and revoke access from the new Linked Devices screen in Settings.
Enhanced Safety Reliability:
- Improved GPS accuracy ensures your caregivers receive your precise location during emergencies
- Detection events are now captured immediately, even if you're unable to interact with your watch after a seizure
Accidental Alert Prevention:
- The Help button now requires a 2-second press-and-hold to activate, with visual and haptic feedback. This prevents false alarms while keeping emergency assistance instantly accessible.
Additional Improvements:
- New email confirmation step during signup reduces account setup issues
- Resolved authentication issues that could cause unexpected logouts on Apple Watch
- Fixed sensor validation timing to reduce sample tracking error messages
1.2.0 12/31/2025
Bug Fixes & Stability:
Resolved Monitoring Initiation Issue: We fixed a bug that could occasionally cause the app to mistakenly determine that accelerometer data was unavailable, which would prevent the user from starting a monitoring session.
1.1.2 10/01/2025
This update focuses on making the app more stable and reliable. We've fixed several bugs that could cause crashes and improved how the app checks its sensors to ensure everything is working correctly.
New Features & Improvements:
Improved Sensor Check: Before monitoring begins, the app now runs a quick check to make sure the Apple Watch's motion sensor is working properly. This helps ensure that seizure detection is as accurate as possible.
Bug Fixes & Stability:
Fewer Crashes During Monitoring: We fixed a major bug that could cause the app to crash while recording heart rate data. Your monitoring sessions should now be much more stable.
Smoother Login: We resolved an issue that could cause the app to crash or freeze when you were logging in.
1.1.1 09/24/2025
IMPORTANT: This application has been renamed "EpiWatch Core" to prepare for the launch of a new, public version of the EpiWatch application.
To ensure your existing subscription transfers to our new billing system, existing users MUST log in to this updated version at least once. This will link your purchase history to your User ID.
New Features & Improvements:
- New Subscription System: Subscriptions are now managed by RevenueCat and are tied to your User ID, allowing them to sync and be used across multiple devices.
- Resend Verification Email: A button has been added to the login screen to request a new verification email if the original has expired.
- Offline Subscription Grace Period: A 3-day grace period is now provided for subscription renewals if your device is offline, preventing loss of access.
- Improved Error Messaging: Error messages during account creation are now specific and clear. Pre-monitoring warnings on the watch are also more accurate and context-aware.
- Added repeating haptic feedback on Apple Watch for seizure detection alerts: When the “Siren” setting is enabled, users will now feel distinct vibrations alongside the audible alarm, improving accessibility in noisy or silent environments.
Bug Fixes & Stability:
- Manual Alert Saving: Fixed a critical bug where new manual alerts ("auras") were overwriting previous ones instead of saving correctly.
- Pin Code Removed: The Pin Code feature has been removed to resolve issues that were causing users to be locked out of the app.
- Watch Off Wrist Disabled: This feature has been temporarily disabled to prevent a bug that was causing app crashes.
- Camera Prescription Upload: You can now use your device's camera to quickly and accurately upload a photo of your prescription during onboarding, fixing a bug where it kept going back to the photo picker.
1.1.0 09/08/2025
Improvements:
- Significantly reduced battery drain during monitoring.
- Faster, more reliable syncing between your watch and phone.
- Streamlined seizure reports.
- Security and privacy improvements.
Bug Fixes:
- Fixed an issue where the app could show a connection error at launch.
- Fixed incorrect messaging when a monitoring session stopped.
- General stability and reliability improvements.
more Version 1.3.1 Oct 7
Data Linked to You The following data may be collected and linked to your identity:
Health & Fitness Contact Info User Content Identifiers Sensitive Info Diagnostics Data Not Linked to You The following data may be collected but it is not linked to your identity:
