Spectrum vs FlickerCheck

Turn your iPhone or iPad into a professional audio tool. Spectrum-V lets you measure, visualize, and explore sound with precision — perfect for musicians, audio engineers, and enthusiasts. Key Features • Waveform Analyzer – Monitor live audio waveforms directly from the microphone. • Spectrum Analyzer (FFT) – View frequency distribution with a fast and colorful FFT spectrum. • Spectrogram (Waterfall) – Explore sound energy over time with a vivid spectrogram display. • dB Meter – Check sound levels instantly with a responsive decibel meter (dBFS). • Tuner – Detect pitch and musical notes in real time — great for guitar, vocals, or any instrument. Spectrum-V combines simplicity with powerful analysis tools, making it easy to visualize sound whether you’re practicing music, testing acoustics, or just exploring the audio world.

FlickerCheck is a camera-based utility for screening brightness flicker from displays and lights. Point your iPhone camera at an OLED phone, monitor, tablet, LED bulb, or other light source. FlickerCheck waits for a stable signal, analyzes the captured brightness variation, and presents the result in a clear, understandable format. KEY FEATURES - Screen and Light testing modes - Automatic signal-quality guidance - Flicker level assessment - High, Medium, and Low result confidence - Estimated frequency and modulation depth - Captured signal waveform - Save and compare results locally - Guidance for testing screens at 10%, 25%, 50%, and 100% brightness - On-device camera processing FREE USE FlickerCheck includes five free High-confidence measurements, enough for a four-brightness comparison and one repeat. Failed, indeterminate, Low-confidence, and Medium-confidence results do not use the free allowance. Lifetime Pro is a one-time purchase that unlocks unlimited Screen and Light measurements. IMPORTANT LIMITATIONS FlickerCheck is a camera-based screening utility, not laboratory measurement equipment. Camera frame rate, exposure, rolling shutter, device movement, and high-frequency PWM beyond the camera sampling range can affect results. “Estimated frequency” represents the dominant repeating brightness pattern visible to the camera. It may not equal the display or light source’s true physical PWM frequency. FlickerCheck does not diagnose eye conditions, eye strain, or product safety. PRIVACY Camera frames are processed locally in real time and are not uploaded. Saved measurement results remain on your device. Terms of Use:https://www.nicolaigame.top/common/terms-en.html Privacy Policy:https://www.nicolaigame.top/common/privacy-en.html