ShutterFinder — Flicker Detect
Shutter speed flicker detector
Only for iPhone
$2.99
iPhone
Detect light flicker on set and get the exact shutter speed to eliminate it. One tap. Instant results. Built for film professionals.
Stop guessing your shutter speed on set. ShutterFinder detects light flicker instantly and tells you the exact shutter speed to eliminate it.
HOW IT WORKS
Point your iPhone at any flickering light source — LED panels, fluorescent tubes, HMI lights, monitors, practicals — and tap MEASURE. ShutterFinder uses your iPhone's 240fps high-speed camera and real-time FFT analysis to detect the precise flicker frequency. Within seconds, you get the optimal shutter speed to shoot flicker-free.
BUILT FOR FILM PROFESSIONALS
• Detects flicker frequency with precision using FFT spectral analysis
• Recommends the exact shutter speed in time (1/50) or shutter angle (180°) — switch with one tap
• Supports all common shooting frame rates: 23.98, 24, 25, 29.97, 30, 50, 60 fps — plus custom input
• Change shooting frame rate after measurement and see shutter recommendation update instantly
• Works with any flickering source: LED, fluorescent, HMI, neon, monitors, practicals
• Identifies the source type (50Hz mains, 60Hz mains, PWM LED, etc.)
ONE-TAP WORKFLOW
No complicated menus or settings. Point at the source, tap MEASURE, get your shutter speed. That's it. The app automatically stops measuring when it has a confident reading.
TECHNICAL DETAILS
• Uses 240fps slow-motion capture for high-resolution temporal sampling
• FFT (Fast Fourier Transform) analysis via Apple's Accelerate framework
• Sub-Hz frequency accuracy with parabolic interpolation
• Automatic exposure adjustment for difficult lighting conditions
• Detection range: 40–500 Hz
Requires iPhone XS or later with iOS 17.0+.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes
The developer, Nuncha, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Netfox Media
- Size
- 1.4 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Netfox Media
