EVP Ghost Signal
Paranormal Audio Investigator
Free · In‑App Purchases
Professional EVP recorder with real-time anomaly detection, spectrogram analysis, EMF monitoring, and HD investigation video export. Built for serious investigators.
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.
Support URL: https://myrcbox.com/evp-ghost-signal/
Marketing URL: https://myrcbox.com/evp-ghost-signal/
Ratings & Reviews
Minor bugs fixed
Few UI changes
The developer, Sylvain Lafrance, 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
- Sylvain Lafrance
- Size
- 6.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Horror/Fear Themes
- In-App Purchases
Yes
- EVP Ghost Signal - Yearly Subscript $9.99
- EVP Ghost Signal - Monthly $1.99
- EVP Ghost Signal - Lifetime $24.99
- Copyright
- © 2026, Sylvain Lafrance