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EVP Ghost Signal records and analyzes Electronic Voice Phenomena on iPhone — real-time anomaly detection, waveform and spectrogram visualization, EMF meter, spirit box, and investigation reports.
EVP Ghost Signal records and analyzes Electronic Voice Phenomena on iPhone — real-time anomaly detection, waveform and spectrogram visualization, EMF meter, spirit box, and investigation reports.
Swipe between three live views while recording. Audio on one side, electromagnetic on the other.
See audio in real time. Swipe between waveform, spectrogram, and EMF views while recording. Orange crosshair markers flag anomalies instantly.
Magnetic field measurement in microtesla using the device magnetometer. Full-circle gauge with color-coded levels and a live history graph.
Tools built for the field, not the studio.
Capture faint signals that ordinary recorders would miss.
Band-pass filter tuned to the human voice range (300–3000 Hz).
White noise, pink noise, and frequency sweeps with adjustable volume.
Tap to flag key moments during a session. Red flash confirms each mark.
Waveform, spectrogram, and EMF — all while recording continues.
Auto-tag each recording with location and place name on the map.
Signal-processing algorithms scan every frame for anomalies you'd otherwise miss.
Flags frequency spikes exceeding 3 standard deviations from the rolling baseline.
Voice and breath pattern recognition via formant analysis and spectral flatness.
Counters and alert banners surface in real time during a recording session.
Every detection is saved for later review and inclusion in PDF reports.
Real-time frequency visualization with orange crosshair markers on detected anomalies. Tap to go full-screen.
Switch the look across the entire app.
Frequency sweep simulator with Forward, Reverse, and Random scan modes.
Automatic geolocation tagging with place names and color-coded pins.
Search, filter, favorite, and organize your sessions however you investigate.
Convert recordings to text for review and inclusion in PDF reports.
Render the spectrogram view as a shareable HD video clip.
A walkthrough and contextual tips help new investigators get started.
Every screen designed for low light, fast access, and clear data.
Everything you need to investigate is free. Upgrade for the analyst-grade toolset — monthly, yearly, or lifetime.
| Feature | Free | Pro |
|---|---|---|
| Audio recording with gain & filters | ✓ | ✓ |
| Real-time anomaly & whisper detection | ✓ | ✓ |
| Waveform & spectrogram views | ✓ | ✓ |
| Tone generator | ✓ | ✓ |
| Bookmarks | ✓ | ✓ |
| Spirit Box | ✓ | ✓ |
| 5 color themes | ✓ | ✓ |
| EMF meter | — | ✓ |
| Reverse playback & speed control | — | ✓ |
| Parametric EQ & presets | — | ✓ |
| Waveform trim tool | — | ✓ |
| Audio transcription | — | ✓ |
| HD video export | — | ✓ |
| PDF reports & investigation logs | — | ✓ |
| Filtered audio export | — | ✓ |
| Investigation map | — | ✓ |
Start free. Upgrade anytime — monthly, yearly, or lifetime.
EVP stands for Electronic Voice Phenomena — voice-like sounds found in audio recordings that have no obvious origin. EVP Ghost Signal uses real-time signal processing to flag anomalies, whispers, and breath patterns so you can review them later. The app is intended for entertainment and research purposes.
Anomaly detection flags frequency spikes that exceed 3 standard deviations above the rolling baseline. Whisper, voice, and breath pattern recognition uses formant analysis and spectral flatness. Detections appear as orange crosshair markers on the spectrogram and are timestamped for later review and PDF export.
Yes. The free tier includes audio recording with gain and filters, real-time anomaly and whisper detection, waveform and spectrogram views, the tone generator, bookmarks, the spirit box, and all 5 color themes. Pro adds EMF meter, reverse playback and speed control, parametric EQ and presets, waveform trim, transcription, HD video export, PDF reports, filtered audio export, and the investigation map.
Nowhere. Your recordings, notes, and investigation data never leave your device. There are no external servers, no third-party SDKs, and no analytics.
No. EVP Ghost Signal is for entertainment and research purposes only. Anomaly and whisper detections are based on signal processing algorithms and do not guarantee the presence of paranormal phenomena. The app does not claim to detect or communicate with paranormal entities.
Your data never leaves your device. No external servers. No third-party SDKs. No analytics.
Questions, feedback, or a feature you'd love to see? I'd love to hear from you.
Contact meUsually a reply within 1–2 business days.
Free download. Optional Pro upgrade for advanced analysis tools. iPhone.
Download on theApp Store