Nystagmus Tracker

Content rating
Everyone
100+
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Content rating
Everyone
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About this app

Nystagmus Tracker helps people living with nystagmus measure and track their involuntary eye movements in Hz using just their phone camera.

Simply press Start Scan, look at the target, and in seconds you will get your eye movement frequency reading. Save your results with notes to track changes over time.

FEATURES:
- Measure eye movement frequency in Hz
- Save and track results over time
- Add notes to each scan
- Find nystagmus specialist doctors near you
- Read the latest nystagmus news
- Connect with the r/Nystagmus community

HOW IT WORKS:
1. Open the app and tap MEASURE
2. Look directly at the target
3. Press Start Scan
4. Get your Hz reading in seconds

For reference only. Not for medical use. Your first scan should be used as your personal baseline.
Measure and track your eye movement frequency in Hz using your phone camera.
Updated on
Mar 30, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info
  • Data is encrypted in transit
  • Committed to follow the Play Families Policy

What’s new

- Extended eye scan from 5 to 10 seconds for better accuracy
- Added weekly Tuesday reminder notification to track your eyes
- Improved nystagmus detection to filter out normal eye movement
- News feed now displays with alternating colors for easier reading
- Email signup added to About screen
- Various bug fixes and improvements