A little clarity, before you begin.

PollutionProfile reconstructs your environmental exposure history from public records about the places you have lived, worked, and gone to school. It brings that history together with everyday tools for air quality, water, and your home, and turns both into a screening-level picture you can act on and discuss with a clinician.

People who want the half of their health picture that bloodwork does not cover. That includes parents thinking about a home, people managing asthma or another chronic condition, anyone buying or renting somewhere new, health optimizers who already track everything else, and professionals who need the public record on a place.

The places you have lived and roughly when. You can type them in with start and end dates, or import a location history file if you have one. You sign in with Google, Apple, or an email address so your history syncs to your own account.

iPhone on iOS 16.2 or later, and Android 8.0 or later. There is no web version of the app; this site is the public information about it.

It is built for the United States, and coverage is strongest in the contiguous states. Several of the underlying records do not extend to Hawaii, Alaska, or the territories, and pollution drifting in from outside the country is not modeled. Where a place is not covered, the app says so rather than filling the gap with an estimate.

No. Nothing is measured in your body. It is a screening built from records about places, and it is not a diagnosis, a lab result, or proof that any exposure caused any illness.

Bloodwork measures what is in your body right now. This reconstructs what has been in your air, water, and surroundings, and for how long — the exposure side that a checkup never asks about. The two answer different questions, and this is not a substitute for either.

Add each place by hand with a start and end date, one at a time. If you have downloaded your location history from Google, you can import that file instead and the app will parse the places and dates out of it.

No. Importing is a shortcut, not a requirement. Entering your addresses manually produces the same history.

Approximate months are fine — the records behind your history are annual or multi-year in most cases. Where you genuinely do not know, leave the gap. Your timeline shows gaps as gaps rather than estimating through them.

Each address and time period is matched separately against the records for that place and those years, then brought together into one timeline. More moves means more segments, not less accuracy.

Only if you choose to. Location updating is a setting with three options: one check each time you open the app, roughly hourly while the app is open, or an update after you move about 50 metres. Outdoor activity sessions you start yourself keep recording while your screen is locked, because that is the point of them.

Yes. Your location history can be exported to a file from the tracking settings, and health data can be deleted selectively from the health data deletion screen, which lets you choose exactly what goes and warns you that deletion is permanent.

It means the number describes the environment at a location, worked out from monitoring stations and dispersion models, rather than something sampled from you. Outdoor or modeled concentrations are not adjusted for how much time you spent indoors, how well your building seals, or what you were doing.

Every finding carries one of four confidence levels. "Measured" means a system serving your location reported it. "Modeled" means it was estimated at your location from monitors or dispersion models. "Proximity" means only that something is nearby — it never asserts that you were exposed. "None" means there is not enough to say.

Health links are graded separately from exposure confidence, on a four-point scale: strong, moderate, limited, and insufficient. Strong means a relative risk from meta-analysis with a confidence interval, applied to dose data. Insufficient means biological plausibility only, with no quantified human evidence. The grade travels with the finding so you can see which is which.

Modeled air toxics tend to run low. In a published comparison across 489 US sites and 79 hazardous air pollutants, measurements exceeded the model in about 74% of comparisons, with a median factor of two. We treat that as a conservative lower bound rather than pretending the model is exact, and the uncertainty band is part of the calculation.

No. A place-based screening can show that there was opportunity for exposure. It cannot establish causation for an individual, and it should not be used that way — including in a legal or clinical decision — without qualified professional review.

Treat it as a conversation starter, not a verdict. The app pairs findings with practical steps where there are any, and with the sources behind them so you or your clinician can weigh them.

Because a missing finding usually means missing monitoring, not a clean result. Inland lakes and rivers often have no recreational water monitoring at all, some datasets stop at the contiguous states, and air toxics modeling is periodic rather than live. The report names these limits in its own methodology section.

A daily environmental score for where you are, with the air and water detail behind it — including a private-well risk survey if you are not on a public system.

Pollution layers, nearby reporting facilities, active fires, protected lands, and reports submitted by other people in the community.

Yes. There is a body view that maps chemicals to the organ systems they act on, and a chemical library with a profile for each one covering where it comes from, how people are exposed, why it matters, who is most at risk, and how to lower exposure.

Yes. You can define and log symptoms and medications, keep a health calendar, and look at how entries line up with environmental conditions. It is a tracker, not a diagnosis or an emergency service.

Yes, with your permission. It reads steps, heart rate and resting heart rate, sleep stages, blood oxygen, respiratory rate, active energy, exercise time, and workouts.

Yes. You can record an outdoor session and see your route coloured by air quality along the way, and workouts can be imported from Apple Health. Route enrichment covers the contiguous states only.

Public environmental and health records kept by federal agencies — the Environmental Protection Agency, the US Geological Survey, NOAA, NASA, FEMA — alongside satellite records and peer-reviewed research. Each finding carries its source and confidence. These are data sources, not endorsements; no agency endorses this product.

Public reporting of industrial releases in the United States reaches back to the late 1980s, and some records go further. Coverage thins the further back you go, and your timeline shows uncovered periods as gaps.

There are over a thousand chemical profiles in the library, grouped by the hazard lists they appear on and by the body systems they act on.

Some of it. Air quality readings and fire detections update through the day. The historical layers behind your exposure history are periodic government assessments, which are revised and republished on their own schedule rather than continuously.

Partly. Your report has a home environment section, and the app connects to an indoor air monitor if you have one. Most public monitoring is outdoor, so indoor estimates are the weakest part of any place-based picture.

The individual feeds, and the work of reconciling them, are the product. We publish the agencies behind the record and the confidence on every finding, which is what you need to judge a result. Members see the full methodology and limitations in their own report.

Yes. Membership includes a one-page summary written for a doctor, a fuller evidence packet, and a raw data export. The summary opens in a browser and prints cleanly to PDF, so it can go into a visit or a patient portal without special software.

A health overview, your exposure findings, their estimated impact, and recommended actions — followed by appendices covering your parsed location history, detailed reports for air, water, land cover, home environment, dermal exposure and nearby sites, supplementary data, and a limitations and methodology section.

The clinician summary is written to support a conversation: what was estimated, from what, with what confidence, and what the limits are. It is explicitly not a diagnosis or a regulatory determination, and it says so on the page.

The screening itself and its findings stay free, along with the everyday tools: current air quality and the days ahead, your exposure summary, and your first actions. On the free tier your address is resolved to the ZIP or county level.

Precision and paperwork. Your address resolves to the street rather than a ZIP centroid, you can search and pin specific addresses, drill into individual conditions, get a personalised dietary protocol and pollen forecast, and export the evidence packet, the clinician one-pager, and your raw data.

Membership is $200 a year — about 55¢ a day. The everyday tools are free to use without a membership.

Your history grows as life changes, and the public records behind it are revised and extended on the agencies’ schedule. An annual membership keeps your report connected to those updates instead of treating it as a one-time snapshot.

Membership is billed through the App Store or Google Play, so you manage or cancel it in your subscription settings on that account, the same way as any other app subscription.

No. We do not sell your personal information. We share it with service providers who help operate the product, and where the law requires it. The privacy policy sets out each case.

Working data stays on your phone. Once you are signed in it syncs to your own account, encrypted in transit and at rest. Nothing leaves unless you share it.

You. Results are not published or shared with anyone unless you choose to share them, for example by sending a clinician summary to your doctor.

Health data can be deleted selectively in the app, choosing exactly what goes; that deletion is permanent, so export anything you want to keep first. Full account deletion is not yet available inside the app — email privacy@pollutionprofile.com and we will remove your data, except where we are legally required to keep it.

The service is not directed at children under 13, and we do not knowingly collect their personal information. The privacy policy has the detail.