QuietField LLC

Awareness without alarm

New capability from sensors you already carry.

QuietField builds apps that extend what your phone’s sensors do on their own — combining the camera, Bluetooth, Wi‑Fi, the compass and the accelerometer into readings none of them produces alone. No gadget to buy, nothing extra to carry.

And we tell you how sure we are. Every product ships a page listing what it cannot detect — in the navigation above, not buried in the footer. No alert is not a guarantee of safety.

See the products What we can’t detect

The name

A field is a space with an edge. That is the whole idea.

Both halves of the name describe how we work rather than what we will do for you — and the mark draws the same sentence.

The mark is the company’s glyph. Each product keeps the same ripple field on a navy tile and changes only the shape at the center — a check for QuietCheck. That is the entire brand architecture.

Quiet: The posture, not a promise about your surroundings. No red, no sirens, no countdown clocks — an alarm makes a bad moment worse and pushes people to act on information that hasn’t earned it yet. A finding gets a plain sentence and a confidence tier. It is also why a quiet sweep is not good news on its own: it means nothing answered.
Field: The space a sensor can actually reach — and every field has an edge. Ours ends where the phone’s radios end. Naming the company after a bounded space was a way of committing to say where that edge falls, which is what the page on what we can’t detect is for.
The ear: A dog’s ear, drawn slender and tilted forward. It listens. It does not broadcast and it is not standing guard over anything — it sits at the origin of the field because that is the point where a signal arrives, the phone in your hand reading what is already in the air around it.
The ripples: Three arcs struck from that one point, thinning and fading as they widen. Then they stop. A mark that rippled outward forever would be claiming a reach we don’t have; this one shows the range running out, and we would rather draw it that way.

Products

One product, one name. Everything else is a feature.

Our products are named for the subject they make legible — the check, the fit, the network, the record — never for an outcome we’d be promising. A name earns itself by shipping on its own.

QuietCheck

On the App Store

An on-demand sweep of the room you just walked into.

Reads what nearby hardware broadcasts over Bluetooth and Wi‑Fi — trackers, smart glasses, connected devices — and tells you how sure it is about each one. Sweeps run on the phone. Each one ends in a receipt showing what the sweep covered.

The limit A device that isn’t broadcasting is invisible to it, and background scanning on iOS is best‑effort by Apple’s design. A quiet sweep means nothing answered — not that nothing is there.

View on the App Store Details & support iPhone · iOS 17 or later

QuietFit

In development

Whether the piece will make the turn — before the truck is loaded.

Walk the route with the camera — the hallway, the doorway, the corner — and it measures the space, then works out whether the piece can physically be maneuvered through it. The hardest part of a delivery is the turn, and today a two‑person crew finds out on the doorstep. Built for furniture retailers and final‑mile delivery operators, not for the person receiving the sofa.

The limit Stairs are not modeled yet, and one doorway‑pivot maneuver is a known gap. Beyond that, the answer is only ever as good as the measurements behind it — a capture that is off, or a catalog that is confidently an inch out, will produce a confidently wrong answer.

QuietNet

In development

See the devices that answer on your Wi‑Fi — and which ones report a camera or a mic.

For the person setting up a home, renting a furnished place, or auditing a smart home they inherited. It reads the network the way a person thinks about it — this doorbell can see the porch; this speaker has a microphone; this device joined three days ago — instead of handing you a table of IP addresses.

The limit A device that is powered off, hard‑wired, or silent on the network doesn’t answer, so it isn’t listed. Device type is inferred from the hardware vendor, and we label it as inference rather than fact.

QuietRecord

Exploring

A timestamped, private log you can hand to someone.

For people who have been told to document everything and given nothing to do it with. Append‑only entries, encrypted on the device, exported as one ordered file. Being built with the advocates who would use it before it is built for sale.

The limit We don’t decide what a court or an agency accepts, and nothing in the product is legal advice. It records what you tell it, when you told it. Your counsel does the rest.

Inside QuietCheck

Features, not products

These do real work. None of them gets its own name.

Smart‑glasses awareness — recognizes the radio signatures of known camera glasses when they are broadcasting.
Arrival sweep for rentals and hotels — the same sweep, guided room by room, for the first ten minutes after you walk in.
License‑plate reader awareness — shows the fixed camera infrastructure already mapped on a route, read‑only.
Vehicle tracker sweep — finds Bluetooth trackers left in a car. It cannot find a wired or cellular logger, which is why it will never be sold as its own app.

Why this card exists A separate app name reads as a separate promise. When a capability can’t carry that promise on its own, it stays a feature and says so here.

The scope statement

What our products cannot detect

This is a top‑level page because it is the most useful thing we can tell you. Some of the items below are features we built and then removed.

It is also where being a software company shows. We extend what the phone already does — we cannot add a sensor to it. Where its radios stop, we stop, and we would rather write that down than let you assume otherwise.

A microphone that is recording

A phone cannot detect an active microphone. There is no signal to read. We cut the feature rather than ship the theater, and any app claiming otherwise is selling you a light show.

A cell‑site simulator

iOS gives no app access to the baseband radio. Nothing on the App Store can do this honestly, ours included.

A wired or cellular tracker on a vehicle

We find Bluetooth trackers, because they announce themselves. A logger spliced into the wiring and reporting over the cellular network never speaks to your phone.

A camera with no radio

A recorder writing to an SD card with its wireless off broadcasts nothing. QuietCheck does offer an optional lens‑glint check that can sometimes catch a lens optically — but it is a heuristic aid, it misses real cameras often, and it flags jewelry and glass. Never treat it as a clearance.

A drone that isn’t broadcasting

We read the FAA Remote ID broadcast most drones are required to send. A drone that doesn’t send it is invisible to us.

Anything at all, while it is powered off

Every finding we report starts as a radio signal. No signal, no finding — and the absence of a finding is not evidence of an absence.

No alert is not a guarantee of safety.

If Bluetooth trackers are your specific worry, AirGuard from TU Darmstadt is free, open‑source and good at exactly that. Use it. We would rather you have the right tool than only ours.

How we work

Everyone in this category sells certainty. We sell a stated scope.

Four commitments. They describe our method and our posture. None of them is a claim about what a product can do — that belongs on the product cards, where it can be shown on screen.

We publish the limits

Each product ships a plain list of what it cannot detect, at the top level of the site. We would rather lose a sale than answer a question you didn’t know to ask.

We say how sure we are

Findings carry a confidence tier — unverified, low, medium, high. A clue is labeled a clue. Inference is labeled inference.

Software, not hardware

We don’t sell a gadget. Every product extends sensors you already own — the camera, Bluetooth, Wi‑Fi, the compass, the accelerometer — and where the work can run on the device, it does.

You pay once

No subscription. No recurring fee to keep a tool you already bought working. The price is the price.

What we build on

None of this hardware is new. Using it together is.

Every sensor below is already in the phone you are holding, and most apps touch one of them for one job. We extend them — combining their signals into readings none of them produces alone — and stay straight about how much confidence that combination earns.

Camera

The shape of a real room. A walk‑through becomes measurements the geometry can be run against — a measuring instrument here, never a detector.

Bluetooth LE

The advertisements nearby devices broadcast about themselves, continuously, to anyone listening.

Wi‑Fi

What sits on a network, what answers when asked, and what the hardware vendor says it is.

Magnetometer

The compass. It also registers magnetic fields close to the phone — and a great many ordinary objects are magnetic, which is exactly why we treat it as a clue and never a verdict.

Accelerometer & gyroscope

How the phone moved. A sweep that knows how you moved it can show you what it actually covered, instead of implying it covered the room.

Location & clock

Where a sweep happened and when, so the receipt afterwards is specific enough to be worth keeping.

Founder

The company is one person’s answer to a thirty‑year question.

Matthew spent three decades running technology for businesses where a mistake lands on a real person’s worst week. More than twenty‑five of those years were at SIRVA Worldwide Relocation & Moving, most recently as Senior Vice President of Client Technologies & IT Operations, where he owned commercial technology strategy, customer platforms and data security practice for a $1.5 billion global organization.

That work is where the thesis for QuietField came from. Moving a family across the world is a business built entirely on trust, and he watched what happens to that trust when a system overstates what it knows. In 2014 he was named Crain’s Cleveland Business CIO of the Year for the practice he built around it.

Technology should earn trust, not just deliver features. The fastest way to lose it is to answer a question more confidently than you actually can. Matthew B. Dickerson, Founder & CEO

He founded QuietField to apply that standard to consumer software — building on what the phone already in your pocket can do, in a category where the incumbent move is to sell certainty about the physical world that no phone can deliver. He has spent much of his career translating hard technical problems into plain language, through published articles, conference keynotes and adjunct teaching. The products carry the same habit: say what the phone can actually read, say how sure it is, and say out loud where it stops.

QuietField LLC is a Florida company, built in Tampa.

Meet the team

The Real Bosses

Two divisions. Zero productivity. Full hearts. The mark at the top of this page is a dog’s ear — these are the dogs. They also keep a hidden office inside QuietCheck, for anyone who finds it.

Detection Division · Tampa HQ

Gnocchi

Head of Detection

Hears the delivery truck four blocks out. If only it worked over Bluetooth.

Vivienne

Confidence Analyst

Reviews every alert personally. Rules most of them “suspicious,” the vacuum included.

Morale Division · Cleveland (remote)

Wifi

Signals Intelligence

Yes, that’s really his name. Range: excellent, accuracy: unverified. Step outside and he rebrands instantly as HotSpot.

Gravy

Head of Morale

Solves every hard problem by lying down next to it. Success rate: alarming.

Hazel

Chief of Staff

Self-appointed matriarch of the remote office. Supervises Gravy and Wifi with an ever-guarding stare, contributes no measurable work, and expects to be in every photo.

No dogs were consulted on the detection engine. They were consulted constantly about everything else.