EVP Ghost Signal

About

EVP Ghost Signal is a professional-grade paranormal audio investigation tool. Record, analyze, and export EVP (Electronic Voice Phenomenon) sessions with real-time detection, spectrogram visualization, and EMF monitoring. INVESTIGATION RECORDING - High-quality audio recording with adjustable gain (up to +40 dB) - Noise reduction and band-pass filter (300-3000 Hz voice range) - Swipe between Waveform, Spectrogram, and EMF views while recording - Tone generator (white noise, pink noise, frequency sweep) with adjustable volume - Bookmark key moments during recording REAL-TIME DETECTION - Anomaly detection flags frequency spikes exceeding 3 standard deviations - Whisper, voice, and breath pattern detection via formant analysis - Live detection counters and alert banners during recording - All events saved with timestamps for later review SPECTROGRAM ANALYSIS - Real-time frequency visualization with 5 color themes - Orange crosshair markers on anomaly events - Immersive full-screen mode - Ghost Green, Phantom Blue, Infrared, Ultraviolet, and Classic Amber themes EMF METER (Pro) - Magnetic field measurement in microtesla using device magnetometer - Full-circle gauge with color-coded levels (Normal to Extreme) - Live history graph with spike markers - EMF data saved with recordings and included in exports PLAYBACK & EDITING (Pro) - Reverse audio playback with speed control (0.5x-2x) - Tap-to-seek waveform navigation - Waveform trim tool — trimmed clips inherit all metadata - 5-band parametric EQ with presets: EVP Enhance, Whisper Boost, Noise Cut, Voice Isolate - Detection timeline with filterable list and tap-to-jump - Timestamp bookmarks with red flash confirmation - On-device audio transcription EXPORT TOOLS (Pro) - HD investigation video (1080x1920 @ 30fps) with animated spectrogram, waveform, EMF meters, detection flash, and timeline markers - Filtered audio export with applied EQ and filters - Multi-page PDF session reports with detection event logs - Multi-session investigation log PDF - Save videos to Camera Roll ADDITIONAL FEATURES - Spirit Box frequency sweep simulator (Forward, Reverse, Random) - Session geolocation tagging with place names - Session map with color-coded pins - Investigation library with search and favorites - 5 color themes throughout the app - Contextual tips and How to Use guide - Onboarding walkthrough PRIVACY & ON-DEVICE PROCESSING - 100% on-device — no data is ever sent to external servers - No third-party SDKs, no analytics, no tracking - All recordings, detections, EMF data, and bookmarks stored locally on your device - Audio transcription runs entirely on-device using Apple Speech - Signal processing (FFT, anomaly detection, whisper detection) all performed locally - Location data stored only on your device and never shared - No account or login required - You own your data — delete a recording and it's gone forever EVP Ghost Signal is designed for serious paranormal investigators, ghost hunters, and anyone curious about EVP research. The app uses scientific signal processing techniques — no gimmicks. Your privacy is respected: everything stays on your device. Note: This app is for entertainment and research purposes. Anomaly and whisper detections are based on signal processing algorithms and do not guarantee the presence of paranormal phenomena. Privacy Policy: https://sylvainlafrance.dev/evp-ghost-signal/#privacy-policy Terms of use: https://sylvainlafrance.dev/evp-ghost-signal/#terms-of-use