Ghost Detector vs Spectra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ghost Detector
Transform your device into a paranormal investigation tool with a spirit radar, EMF-style meter, and session log. Explore your surroundings, record findings, and enhance spooky nights with a low-glare interface. Designed for entertainment and shared scares.
- Live 360-degree spirit radar
- EMF-style meter with haptic feedback
- Session log with timestamps and readings
- Night mode for low-light use
- Save and share investigation results
- Instant start, no account required
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Something just moved. Or did it? Ectavo turns your iPhone into a handheld paranormal investigation kit: a spirit radar, an EMF-style meter, and a full session log, all built for one purpose. Making the dark a lot more interesting. Point your phone. Sweep the room. Watch the needle jump. SPIRIT RADAR A live 360-degree sweep that maps activity around you in real time. Contacts appear as blips with distance and bearing, so you always know which corner to check next. EMF-STYLE METER The classic ghost-hunting readout, reimagined for your phone. The meter climbs, the handset buzzes, and the screen floods red when a reading spikes. SIGNAL AND WORD LOG Every session is recorded with timestamps, readings, and captured words, so you can scroll back through the night and argue about what actually happened. NIGHT MODE A dark, low-glare interface built for basements, attics, and 2 a.m. hallways. The red-light theme keeps your eyes adjusted to the dark. SESSION REPLAY Save each investigation, name the location, and share the results with whoever dared you to go in first. BUILT FOR THE MOMENT Instant start, no setup and no account Haptic feedback you feel in your hands Works anywhere: old houses, campsites, hotel rooms, your own hallway Designed for solo scares and group dares alike PERFECT FOR Halloween night. Sleepovers. Road trips. Campfire stories that need a prop. Convincing your friend the attic is a bad idea. Long, quiet evenings that could use a little dread. PLEASE READ THIS PART Ectavo is an entertainment app. It does not detect ghosts, spirits, or paranormal activity of any kind, and it makes no claim to. Every blip, reading, word, and alert is simulated for fun. Enjoy it as the toy it is, and please don't use it to make decisions about real places, real people, or anything that actually matters. Turn the lights off. Turn the volume up. See what happens. Some features require a premium subscription, available through in-app purchases. Subscription Name: Weekly Access Subscription Length: 1 Week Price: $5.99 per week Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Spectra
This app transforms your phone into a ghost hunting instrument using real hardware sensors. It analyzes EMF, EVP, and motion data, offering explanations for readings and a map of haunted locations. Full access unlocks enhanced playback and advanced features.
- SLS camera with pose detection
- EMF detector with real-time readings
- EVP recorder with live spectrum analysis
- ITC channel for spirit communication
- Motion and pressure sensor tracking
- Map of haunted places
- Session logging and playback
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Spectra turns your phone into a ghost hunting instrument. Every number on screen comes from real hardware in your phone: the magnetometer, the microphone, the barometer, the camera, the accelerometer and gyroscope. It's all processed on the phone and explained in plain English. No random spikes. No theatrics dressed up as data. The measurements are honest. What they mean is your call. SLS OPTICS Point the camera at the room. On-device pose detection draws a glowing stick figure over anything shaped like a person, live, while your other readings stay on screen. It's strict on purpose: it won't outline a coat rack. Tap MARK to keep a frame with the figure burned in. EMF DETECTOR Your phone's compass chip reads the magnetic field around you. Spectra learns the room's normal level, then shows how far each reading climbs above it, in microtesla. Follow the needle toward the source. House wiring sits flat. A passing elevator swells and fades. A sharp climb that follows you around is the one worth writing down. EVP RECORDER A live spectrum shows everything the mic hears, from deep rumble to past the edge of hearing. When something sustained shows up outside the human speech band, below 85 Hz or above 4 kHz, with no voice underneath it, Spectra saves a clip and tags its peak frequency. Detection pauses while you're talking, so a capture can't just be you. ITC CHANNEL Spectra's take on the spirit box. On-device listening writes out what you say and, under your words, surfaces anything talking back. Ask a question, then give it a little quiet. PRESSURE, MOTION AND PRESENCE The barometer tracks air pressure against the room's normal. Doors and drafts jump in steps, weather drifts slowly. Motion sensors tell your footsteps apart from a knock near the phone. A presence level from 0 to 5 weighs every channel: EMF counts least, a voice reply counts most, and readings are discounted while you're walking around. A MAP OF HAUNTED PLACES Find reviewed haunted places across the US, read what people say happened there, and get directions. A person checks each one before it goes on the map. EVERY SESSION, SAVED Each investigation is logged automatically: timestamped contacts, the EMF trace, pressure trends, EVP captures and SLS frames. Go back through any session and play its clips. FIELD MANUAL Every readout has a plain-English page one tap away: what the sensor measures, what the numbers mean, and which boring explanations to rule out first. FREE VS FULL ACCESS Every sensor, EVP detection and capture, session recording, the map, and raw playback of every clip are free, no account needed. Full Access adds the processing: enhanced playback that pitch-shifts ultrasonic and infrasonic clips into hearing range, clip tuning, WAV export, the full SLS OPTICS mode, and custom accent colors. Full Access is available as an annual subscription with a 7-day free trial, a weekly subscription, or a one-time lifetime purchase. Prices are shown in the app in your currency. Payment is charged to your Apple ID when you confirm the purchase, or when the free trial ends. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel them in your App Store account settings. PRIVACY Your recordings, transcripts, camera frames and session history stay on your phone, and investigating works fully offline (the map needs a connection). No account, no ads. Spectra does use analytics and crash reporting, and measures which ads bring people in. Nothing from a session is ever part of that. Spectra is for entertainment. The sensor readings, spectrum, audio clips and pose detection are real device measurements. ============ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Ghost Detector at none against Spectra's shown. Ghost Detector also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Spectra's advantage is ratings volume (13 vs 4). On price, rating, review sentiment and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Ghost Detector sells 2 in-app purchases, starting at $2.99 per 7 days and Spectra sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Ghost Detector against 5.0 for Spectra. Both are backed by a comparable volume of ratings — 4 and 13 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Ghost Detector ships an update weekly, Spectra every 4 days. Both last shipped on October 31, 2026.
| Parameter | Ghost Detector | Spectra |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) | 5.0 (13 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 | 13 — better |
| Update frequency | Weekly | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 518 MB | 34 MB |
| Age rating | 4+ | 12+ |
| Developer | DEVSRANK | Byte-Sized Bits, LLC |
Customer experience
Ghost Detector
Spectra
In-app purchases
Ghost Detector
- Ghost Detector Weekly3 Days trial$2.997 Days
- Ghost Detector Yearly$14.991 Year
Spectra
- Pro Weekly$0.997 Days
- Spectra Pro Yearly3 Days trial$12.991 Year
- Pro Lifetime$19.99








