# EVP Ghost Signal — Paranormal Audio Investigator > Professional paranormal audio investigation and analysis tool with real-time detection and export. (iPhone/iPad app by Sylvain Lafrance.) - Source: https://appshunter.io/ios/app/evp-ghost-signal/id6761862458 (this page in markdown: same URL + `.md`) - Developer: [Sylvain Lafrance](https://appshunter.io/developer/1197090441) - Category: Utilities, Entertainment - Price: Free with in-app purchases - Rating: 4.60/5 from 5 App Store ratings - Age rating: 9+ - Requires: iOS 18.6 · 6 MB - Languages: American English - Released: 2026-04-15 - Data updated: 2026-08-11 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/evp-ghost-signal/id6761862458/reviews.md ## What is EVP Ghost Signal? 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 ## Key features - High-quality audio recording with adjustable gain - Real-time anomaly and pattern detection - Spectrogram visualization with multiple themes - EMF meter with magnetic field measurement - On-device audio transcription - HD investigation video export - Spirit Box frequency sweep simulator ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | EVP Ghost Signal - Monthly | $1.99 | per month | | EVP Ghost Signal - Yearly Subscript | $9.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | EVP Ghost Signal - Lifetime | $24.99 | one-time | ## Frequently asked questions about EVP Ghost Signal ### What is EVP Ghost Signal? EVP Ghost Signal is a professional-grade tool for recording, analyzing, and exporting Electronic Voice Phenomenon (EVP) sessions. It offers features like real-time anomaly detection, spectrogram visualization, and EMF monitoring for paranormal investigations. ### Does EVP Ghost Signal have ads? No, EVP Ghost Signal is ad-free. The app prioritizes user experience and privacy by not including any advertisements. ### Is EVP Ghost Signal free to use? EVP Ghost Signal is free to download and use. Some advanced features, such as the EMF meter and playback/editing tools, are available through in-app purchases. ### What devices does EVP Ghost Signal support? EVP Ghost Signal is available on iPhone and iPad devices, catering to Apple users interested in paranormal investigation. ### How often is EVP Ghost Signal updated? The latest version of EVP Ghost Signal is 1.2, which was last updated on June 20, 2026. Updates typically include new features, bug fixes, and performance improvements. ### Is my data safe with EVP Ghost Signal? Yes, EVP Ghost Signal ensures 100% on-device processing with no data sent to external servers. All recordings, detections, and personal information are stored locally and are never shared. ### What age rating does EVP Ghost Signal have? EVP Ghost Signal has an age rating of 9+, making it suitable for younger users interested in exploring paranormal phenomena under supervision. ### Can I transcribe audio with EVP Ghost Signal? Yes, EVP Ghost Signal offers on-device audio transcription using Apple Speech. This allows you to convert recorded audio into text directly within the app. ## Version history (last 5 releases) ### 1.3 — 2026-07-21 • Recording now stops and saves to your library automatically if interrupted by a phone call, Siri, or an alarm — nothing is lost • New "Keep Screen On" option in Settings prevents the screen from dimming during long investigations • Onboarding and in-app tips updated • Fixed recording not starting on devices without a magnetometer • Minor bug fixes and stability improvements ### 1.2 — 2026-06-20 Minor bugs fixed Few UI changes ### 1.1 — 2026-05-09 Playback Improvements • Playhead line on waveform, spectrogram & EMF graphs • Tap bookmarks or detections to jump directly to that moment • Play resumes from your current position • Reverse playback starts from current position with seamless mode switching • Time display and seek bar reflect reverse direction • Loading indicator when opening recordings Spirit Box • Adjustable min & max frequency range (20–20,000 Hz) • Frequency range labels on sweep visualization Bug Fixes • Fixed crash when seeking near end of long recordings • Fixed seek bar interfering with swipe-back navigation • Fixed EMF playhead not showing at position 0:00 • Fixed reverse playback always starting from beginning • Auto-corrects stored duration from actual file length ### 1.0.1 — 2026-04-22 Minor bug fixes and stability improvements Happy ghost hunting! ### 1.0 — 2026-04-15 No release notes. ## More apps by Sylvain Lafrance - [Soccer Kick](https://appshunter.io/ios/app/soccer-kick/id1197090442) - [Point and Shoot Ball Game](https://appshunter.io/ios/app/point-and-shoot-ball-game/id1234110279) - [Falling Bricks](https://appshunter.io/ios/app/falling-bricks/id1339682429) - [Share-it - App for bloggers](https://appshunter.io/ios/app/share-it-app-for-bloggers/id1460343379) - [HoursCal](https://appshunter.io/ios/app/hourscal/id1613446069) - [Search-it](https://appshunter.io/ios/app/search-it/id1626651992) All apps by Sylvain Lafrance: https://appshunter.io/developer/1197090441 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-11.*