EMF radar, SLS camera, EVP engine: everything GhostTech has today started as a weird idea on a list. With the new update we're launching GhostTech: Experimental, a separate section of the app where we test features that step outside "sensor measuring something real" and into "tool for experimenting with your own subjectivity." None of this is scientifically proven. All of it is meant for playing, testing, and drawing your own conclusions.
This first batch has three features: an alarm built for astral travel, an EMF yes/no communication session, and a spirit box reinvented for phones that no longer have radio. Here's how each one works, where the idea comes from, and — most importantly — what each result is and isn't.
First things first: the label matters
- Everything under GhostTech: Experimental is subjective: it doesn't measure paranormal phenomena, isn't validated by any study, and shouldn't be taken as proof of anything.
- These are self-experimentation tools, in the tradition of techniques used for decades by amateur investigators: EMF yes/no, spirit box, sleep induction.
- The idea behind it is simple: if you're going to hunt ghosts, why limit yourself to the physical plane? These features explore the hunt from the astral plane, entirely under your own judgment.
- We'll keep adding to this section over time, and a lot of it will come straight from your suggestions.
What GhostTech: Experimental is (and isn't)
Until now, every GhostTech module measured something that's genuinely real: the magnetometer picks up an actual magnetic field, the microphone picks up an actual sound wave, the camera picks up actual infrared light. What the AI or the investigator does with that data is interpretation, but the starting data point isn't invented.
GhostTech: Experimental is deliberately different. Here we start from techniques and beliefs that have circulated among paranormal investigators for decades — yes/no communication, the spirit box, induced astral projection — and turn them into tools inside the app, with full honesty up front: no peer-reviewed study backs up that they work the way tradition claims. What we do offer is an orderly way, with real instruments from your phone, to test them yourself.
Astral travel alarm: hunting from the astral plane
This feature's premise draws on an idea repeated often in esoteric circles: if the astral plane really exists, the best way to reach it isn't while wide awake, but at the threshold between waking and sleep. The astral travel alarm schedules one or more alarms during your sleep hours — you choose fixed times or semi-random moments within a range — with different profiles designed to trigger different states:
- Soft induction mode. An ambient tone that rises in volume very slowly, meant to half-wake you and leave you in that hypnagogic state where some people report lucid dreams or a sensation of "leaving" the body.
- Guided nightmare mode. A more unsettling sound pattern, for anyone who wants to deliberately experiment with intense dreams as part of their exploration — entirely at their own risk and discretion, of course.
- Snap-awake mode. Exactly that: an abrupt cutoff, for anyone who'd rather interrupt sleep outright and immediately jot down whatever they remember, a classic dream-journaling technique.
The end goal, in any of the three modes, is the same: give you a window to attempt an astral journey and, if paranormal investigation interests you, consider that maybe it's not all about the EMF radar in the next room. This isn't scientifically proven. There's no evidence that astral projection is real or that an alarm can trigger it at will. What is real is scheduled wake-up during light sleep phases, documented in sleep research for reasons that have nothing to do with esotericism. GhostTech simply gives you the timer; what you do with those minutes is entirely up to you.
EMF yes/no session: asking questions to the magnetometer
This is the experimental feature closest to what you already know from the EMF radar, with a new layer on top. The procedure is simple: you open the session, leave the phone still in the room, establish an electromagnetic field baseline for a few seconds, and then ask closed questions out loud — like "is someone here with me?" If the magnetometer registers a spike above your baseline in the window right after the question, the app marks it as a "yes"; if there's no spike, it marks it as a "no."
The sensor data is completely real: there's a magnetic field, and there's a reading. What's a convention, not proof, is deciding that spike "answers" your question. An EMF spike can have dozens of physical causes — a nearby appliance, the phone itself, a wire inside the wall — and the app can't (and doesn't claim to) tell those causes apart from supposed communication. What the yes/no session adds is a structured way, with a timestamp and a log of every question and answer, to apply a technique many investigators have used with standalone EMF meters for years, now built in and documented inside the app.
Microphone spirit box: speech recognition instead of radio
The classic spirit box is a device that rapidly sweeps the AM or FM radio dial, generating short fragments of audio from different stations mixed with static; some investigators believe that, among those fragments, words or phrases occasionally appear that "shouldn't be there." It's one of the most used — and most debated — techniques in modern paranormal investigation.
The problem is simple: modern smartphones no longer have a physical radio receiver. That chip disappeared from the vast majority of phones years ago. Instead of giving up on the technique or faking it with pre-recorded audio, GhostTech rebuilds it with an offline speech-recognition engine (Vosk) that listens to the raw microphone feed, resampled to 16 kHz, in real time. When the engine believes it recognizes a word in what it hears — your own voice, a whisper, an ambiguous noise, or maybe something else — it speaks it aloud immediately through Android's built-in text-to-speech, so you can follow the session without staring at the screen, just like listening to a classic radio spirit box. Every detected word is logged with a timestamp inside the session.
A sensitivity control adjusts the gain fed into the recognition engine: the higher the sensitivity, the more willing the system is to "find" words in weak or ambiguous audio — the digital equivalent of the auditory pareidolia many investigators deliberately look for in a radio spirit box's static. None of this uses pre-recorded audio or a fixed word list: every result comes from live recognition of whatever the microphone picks up in that instant.
Is it the same as a real radio spirit box? Not technically: one mixes fragments from real stations, the other transcribes live what the microphone hears. But it keeps the same underlying philosophy — creating a situation in which the brain (or maybe something else) can leave a recognizable trace — using only the hardware already in your pocket.
More experiments on the way
This first batch is only the starting point. GhostTech: Experimental is going to keep growing over time: every update can add a new technique, tweak an existing one based on what you report, or even retire one that isn't adding anything interesting. We don't have a fixed list of what comes next — and that's exactly where you come in.
Try GhostTech: Experimental tonight
EMF radar, SLS camera, EVP engine, and now also an astral travel alarm, a yes/no session, and a spirit box: all in one free Android app, processed entirely on your own device.
What should we try next?
If you have an idea for a new experimental feature — or for any other part of the app — this is the place. No account or login needed: write your suggestion and, if you'd like a reply, leave your email.
FAQ about GhostTech: Experimental
What is GhostTech: Experimental?
It's a section of the app where we test new, unconventional features before they join the main lineup. Unlike the EMF radar or the SLS camera, which measure real signals from the environment, experimental features explore subjective ideas from paranormal investigation — like astral projection or yes/no communication — with no proven scientific basis. They're tools for experimenting, not measuring instruments.
Does the astral travel alarm actually induce astral projection?
There's no scientific evidence that astral projection exists or that an alarm can induce it. The feature is based on known hypnagogia techniques — scheduled wake-ups during light sleep phases — that some people associate with lucid dreams, sleep paralysis, or the subjective sensation of "leaving" the body. It's a personal experiment, not a guaranteed outcome.
How does the EMF yes/no session work?
You ask a closed question (yes or no) and watch your phone's magnetometer for a few seconds: an electromagnetic field spike above your baseline is read as "yes," no spike as "no." The magnetic field reading itself is real sensor data, but interpreting it as an intelligent answer is a subjective convention of the method, not proof of communication with anything.
Why does the spirit box use the microphone instead of radio?
Classic spirit boxes scan AM/FM radio stations for fragments of voice hidden in the noise. Modern smartphones no longer include a physical radio receiver, so GhostTech recreates the concept with an offline speech-recognition engine (Vosk) that listens to the raw microphone feed and speaks aloud any word it recognizes, with no pre-recorded audio and no fixed word list.
Will you add more experimental features?
Yes. GhostTech: Experimental is a living section we'll keep expanding with new ideas. You can suggest what you'd like us to try next through the suggestion box, both in the app and on this very page.
Conclusion
GhostTech: Experimental isn't meant to replace the EMF radar or the SLS camera: it's a separate space, deliberately labeled as such, so you can play with techniques that have circulated among investigators for decades without anyone passing fiction off as science. Astral travel alarm, yes/no session, and microphone spirit box are just the first step of a section that's going to keep growing — often with your own ideas.
Remember: GhostTech: Experimental is entertainment and pure self-experimentation. None of these features are scientifically validated, none measure or confirm paranormal phenomena, and results depend entirely on your subjective interpretation. If any scheduled-sleep technique causes you discomfort, anxiety, or affects your rest, stop using it and always prioritize your wellbeing.