Comparison

EyeSound Vocal vs GhostFinder

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

EyeSound Vocal

Features
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EyeSound Vocal converts spoken words and other sounds into data rich images. These are seen in an active spectrogram displayed on the screen of your device. Latency of sound-to-image is less than 100 milliseconds. The spectrogram can be tuned by the user so that images of most spoken words are recognizable and are unique. If one has memorized a good sized vocabulary of word images, there can be some visual comprehension of spoken conversations just from viewing the app's spectrogram. Details in the spectrograms indicate inflection and volume. Applications/uses: - entertainment - watch as sounds and conversations morph into image streams - art - create and download spectrogram images that correspond to spoken phrases or other sounds ------------------------------------------------ NOTE: EyeSound Vocal does not capture medical data and does not provide health related measurements, diagnoses or treatment advice. It is not intended for use as a tool for treatment of medical conditions. It is not intended for use as a tool for scientific measurements. ------------------------------------------------ User adjustable parameters in the app include the rate at which sonogram images progress across the screen, resolution, colors, color switching and color mapping to sound intensity, high frequency boost. Features include auto gain, display of saved images next to active or paused spectrogram, pause/resume for capture of images, save/recall of images, save/recall of setup parameters, default parameter setup that is well suited to the visualization of human speech. full screen mode for a view of nothing but the active, or paused, spectrogram. How the app works: Sound is captured by your device's microphone. The app processes the sound data in small sized packets. For each packet the app computes frequencies and intensities. A spectrogram is created by color mapping intensities across frequency bins and then plotting these versus time. With ongoing plotting of packet data as it arrives the spectrogram becomes 'active' - it appears as a movie. EyeSound - Past, Present, Future: 45 years ago, in 1979, a young chemical engineer fresh out of MIT had just begun working for GE in Niskayuna, NY. In his spare time he built and experimented with breadboarded circuits that incorporated resistors and capacitors, transistors and ICs and lights, microphones and speakers. One day he assembled a device consisting of a row of LEDs tied into a circuit that would sequentially light the LEDs in accordance with an input voltage signal. When he manually swept this device in an arc he saw - very much to his surprise and to his fascination - images of complex waveforms painted across empty air. This simple device was giving a glimpse of all of the information that was normally only heard! The engineer had found a mission: improve upon the device to open to the world a whole new dimension of visual perception. A team of 2 of us - the engineer and the coder - have over the past several months turned the concept into an app. The initial release is happening now. The 45 year old mission is on the verge of realization. We anticipate releasing new versions of the EyeSound Vocal app on a regular basis. Users - please send us your suggestions and we'll use them as direction for improvements and use them to expand on our user tips. We will be taking a look into interfacing EyeSound with two types of peripheral devices (1) AR glasses which could put the active spectrogram front and center in your field of view - so that while viewing the spectrogram you will be more in the same world with the people around you; (2) wearable, directional and better quality microphones to avoid the pick up of background sounds that at times obscure the visualizations.

About

GhostFinder

Features
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Unleash the Paranormal Investigator Within with GhostFinder! The ultimate AI-powered toolkit for paranormal detection and analysis. Whether you're a seasoned ghost hunter or a curious enthusiast, GhostFinder transforms your mobile device into a sophisticated spectral sensor, offering cutting-edge technology to explore, document, and understand the mysteries of the unseen world. Key Features that Set GhostFinder Apart: Advanced EMF Detection: Our state-of-the-art EMF detector utilizes your device's sensors to identify electromagnetic field fluctuations, a common indicator of paranormal activity. Watch the dynamic needle gauge, interpret real-time frequency readouts, and receive intuitive alerts for baseline, elevated, and anomalous readings. Log your findings automatically to build a comprehensive activity map of your investigation site. EVP Capture & Analysis: Record Electronic Voice Phenomena (EVP) with unparalleled clarity. GhostFinder's integrated EVP recorder captures subtle audio anomalies, while our AI-powered analysis transcribes potential messages and identifies entity signatures. Playback recordings with variable speed, visualize waveforms, and save compelling captures directly to your investigation log. AI-Powered Paranormal Tools: Dive deeper with a suite of intelligent tools designed to enhance your investigations: Spirit Box: Engage in real-time two-way communication simulations with unseen entities. Our AI interprets your questions and synthesizes eerie, context-aware responses. Ghost Speech: Transform raw scan data or entity profiles into decipherable speech, giving a voice to the voiceless. Entity Chat: Simulate direct conversations with detected entities, tracking energy levels and building interactive dialogue. Thermal View Tool: Experience simulated thermal imaging to visualize subtle temperature shifts often associated with spectral presence. Paranormal Oracle: Get AI-driven insights, evidence-based reasoning, and recommended actions based on your gathered data. Seance Analyzer: Assess the suitability and potential risks of a sΓ©ance environment with AI guidance. Frequency Analyzer: Delve into the intricate patterns of audio frequencies to uncover hidden messages. And Many More: Explore tools like Aura Reader, Dowsing Rod, Poltergeist Detector, Dream Analyzer, Energy Cleansing, Historical Research, and Cryptography to cover every facet of your paranormal quest. Interactive Floor Mapping: Visualize your investigation on an interactive floor map. Pinpoint exact locations of EMF spikes, EVP captures, and other significant findings. Create custom markers, analyze activity hotspots, and build a detailed spatial understanding of your haunted environment. Comprehensive Case Management: Organize all your paranormal endeavors effortlessly: Investigations Log: Create detailed case files for each site, tracking status, location, date, and overall threat levels. Journal Entries: Document every observation, photo, and finding with rich journal entries, linking them directly to your investigations. Report Builder: Generate professional, data-rich reports summarizing your investigations, complete with analysis, evidence, and conclusions. In-depth Analytics & Insights: Gain unprecedented insights into paranormal activity. GhostFinder provides analytics dashboards to visualize trends, track equipment effectiveness, monitor activity patterns over time, and evaluate the success of your methodologies. Understand the statistics behind the supernatural. Designed for the Digital Age, with a Nod to the Arcane: GhostFinder features a dark, atmospheric interface with glowing accents and unique fonts that immerse you in the world of ghost hunting. Optimized for mobile, it’s intuitive, responsive, and always ready for your next encounter. GhostFinder is not just an app; it's your indispensable companion for exploring the paranormal. Download now and start your journey into the spectral realm!

Screenshots

EyeSound Vocal4 screens
GhostFinder4 screens

Verdict

The call

The clearest difference is price: EyeSound Vocal at Free against GhostFinder's $1.99. GhostFinder's advantage is update cadence (every 5 days vs every 3 weeks) and iOS requirement (15.5 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

EyeSound Vocal is free to download; GhostFinder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EyeSound Vocal ships an update every 3 weeks, GhostFinder every 5 days. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

Scorecard3 real differences Β· 3 level
EyeSound Vocal versus GhostFinder: the parameters behind the verdict, then further details
ParameterEyeSound VocalGhostFinder
PriceFree β€” better$1.99
Update frequencyEvery 3 weeksEvery 5 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS17.015.5 β€” better
Further details β€” not scored
Size3 MB9 MB
Age rating4+17+
Developerkeith houseJames Harrison Burt

In-app purchases

None

EyeSound Vocal

No in-app purchases

None

GhostFinder

No in-app purchases

Questions

Is EyeSound Vocal free?
EyeSound Vocal is free to download, with no in-app purchases.
Is GhostFinder free?
GhostFinder costs $1.99, with no in-app purchases.
Do EyeSound Vocal or GhostFinder have ads?
Neither EyeSound Vocal nor GhostFinder shows ads.
Which is updated more often, EyeSound Vocal or GhostFinder?
EyeSound Vocal ships an update every 3 weeks, and GhostFinder every 5 days. Most recently, EyeSound Vocal was updated on October 15, 2026 and GhostFinder on October 24, 2026.

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