Necrometer - Ghost Seeker

Review by eFreeware

Anyone who has spent an evening in a reportedly haunted building knows the awkward middle ground of paranormal investigating: you have a flashlight, a recorder and a lot of silence, but nothing that turns the environment itself into something you can respond to. The tools that exist tend to be either simple EMF readers or audio gadgets that need a separate device. Necrometer - Ghost Seeker, from developer Necrodev, is an attempt to fold several of those ideas into one phone app.

It sits in the Lifestyle category rather than games, costs $1.99, and carries no ads or in-app purchases. At the time of writing it has passed 5,000 installs and holds a 4.1 average from 427 ratings, with 60 written reviews. It arrived in July 2023 and the most recent update, in December 2024, was a crash fix for Android 8.

The premise is straightforward: use the sensors already inside your phone to measure magnetic fields, then interpret the changes as a form of communication. Whether you treat that as a serious investigative aid or as atmosphere for a night out is up to you, but the app is built to be used, not just watched.

The magnetometer meter at the center of it

The feature the developer leads with is a magnetic energy detection meter. It reads your phone's magnetometer and reports the level of magnetic interference around you. The reasoning given is that spirits can influence these fields, which makes magnetic readings a useful signal in a session. That is the theory the app is built on, and it is worth being clear that the meter is measuring magnetism, not ghosts.

There is an option to let the meter noise react to fluctuations, which adds an audible layer to the readings. In a quiet room, that turns small changes in the field into something you can hear rather than only see. I would expect that setting to be the one most people leave on, because it makes the meter usable without staring at the screen.

The meter is the part of the app that behaves most like conventional paranormal equipment. If you have used a handheld EMF reader before, the concept will be familiar; the difference is that it lives on a device you already carry.

Text mode and its word bank

Text mode makes the app answer differently. You ask questions while moving around a location, and the app produces words and phrases drawn from a bank of more than 60,000 entries. The idea is that energy anomalies and shifting magnetic levels drive which words appear, so the output is tied to what the sensor is picking up at that moment.

The developer credits the Ovilus ITC device as the inspiration for this approach, and describes the app as combining energy measurement with established methods of spirit communication. How relevant a message is depends on how strong the spirit connection is. That is a large caveat, and it puts the interpretation firmly in your hands rather than the app's.

What appeals to me about Text mode is that it gives structure to a session. Instead of watching a needle drift, you get words to react to, which makes it easier to keep asking questions and keep the investigation moving. The trade-off is that a large word bank will occasionally produce something that feels pointed, and judging whether that means anything is a skill the app cannot supply.

Speech mode and the playback slider

Speech mode is the stranger of the two. Rather than playing back recordings, the app generates random speech sounds internally, with no pre-recorded audio or sound banks involved. The claim is that spirits can shape those sounds into coherent messages, following the ideas behind ghost boxes and EVP work.

Some of what you hear may come through in real time, in the way a ghost box is used, while other messages may only become apparent when you play back recorded audio. A rate slider lets you adjust the speed of that playback. That combination of live listening and later review is the part of the app I find most interesting, because it acknowledges that the moment of capture and the moment of interpretation are not always the same.

The developer notes that the clarity and strength of this kind of communication depend on several factors. That is honest as far as it goes, but it also means Speech mode is the feature most likely to divide users. Some will find the generated sounds compelling; others will hear noise and nothing else. The app does not try to resolve that for you.

What the app needs from you

The main requirement is a phone that can run the app. The developer also mentions an Android 8 crash that was fixed in the December 2024 update, which suggests older handsets were part of the intended audience.

On cost, the picture is simple. Necrometer - Ghost Seeker is a one-time $1.99 purchase. There are no ads and no in-app purchases, so nothing inside the app is gated behind a second payment. For a tool you might use a handful of times a year, that is an easy number to justify compared with the hardware equivalents.

The app is rated Everyone and sits in the Lifestyle category. It is not a game, and it does not pretend to be one; it is a utility for people who already have an interest in the subject.

Getting something out of a session

You move through a location, ask questions, and watch or listen to how the meter and the word output respond. Text mode suits that rhythm best, because it keeps a conversation going while you walk. Speech mode is better treated as a separate pass, either listening live or recording and reviewing afterward with the playback slider.

The optional meter noise is worth enabling early. It lets you keep your attention on the room rather than on the screen, which matters in dark or unfamiliar spaces. Since the app ties its output to magnetic fluctuations, anything that changes the local field will show up in the readings, so a baseline reading before you start asking questions is a sensible habit.

It also helps to go in with modest expectations about relevance. The developer is upfront that the meaningfulness of any message depends on conditions, and a 60,000-word bank will produce hits and misses in equal measure. The app is a prompt for investigation, not a source of answers.

A $1.99 tool for people already curious

Necrometer - Ghost Seeker is a focused app. It does three things: it reads magnetic interference, it turns that into words, and it generates speech sounds you can listen to live or on playback. It does not try to be a general paranormal kit with a dozen extra meters bolted on, and the price reflects that narrow scope.

The 4.1 average from 427 ratings suggests a user base that is broadly satisfied, though a rating is not a measure of whether the phenomena it deals with are real. What the app can be judged on is whether it delivers the tools it describes, and on that front the feature set is coherent and the one-time cost is low.

If you already own EMF equipment and a ghost box, this will feel like a lighter, more portable version of that setup. If you are curious about the subject and want a single app to try, the absence of ads and purchases makes it a low-risk way to find out whether the approach holds your attention.

What's new in version 2.7

Fix crash bug android 8.