Flicker Safe: Test Light
LED Flicker & Banding
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Scan any LED panel, lamp, or venue light before it ruins your footage. See modulation, frequency, and safer shutter speeds.
FlickerSafe is a camera-based LED flicker tester for filmmakers, photographers, streamers, and event crews. Point your iPhone at a light to see its flicker frequency, modulation, and camera risk before you shoot.
Use FlickerSafe when scouting venues, setting up a home studio, comparing LED panels, checking dimmer levels, or preparing a shoot where lighting needs to stay camera-safe.
Key features:
- Estimate dominant flicker frequency from camera luminance samples
- Measure modulation depth and camera risk
- Check common shutter speeds such as 1/50, 1/60, 1/100, and 1/120
- Get safer shutter-speed suggestions for the detected light
- Save fixture measurements and history for later reference
- Export production reports with FlickerSafe Pro
FlickerSafe is designed as a practical field tool, not a laboratory instrument. Results depend on device camera capabilities, ambient light, fixture brightness, and how steadily the phone is held during capture.
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bugfixes and naming
The developer, Jan Sokol, 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
- Jan Sokol
- Size
- 2 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 14 more
- English, Czech, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- FlickerSafe Pro $6.99
- Copyright
- © 2026 Cognerva