Privacy Policy

1 Who publishes this app

UK Air Pollution is developed and published by Mike Bellerby, an independent developer, under the bundle identifier com.bellerby.pollution. This policy explains what happens to information related to your use of the app — both what the app itself does, and what the outside services it talks to may see.

2 Information we collect

We don't collect, receive, or have access to any personal information from this app. There's no account system, no sign-up form, no analytics library, and no crash-reporting service built into it. The app has no server of its own for it to report back to, and no way for us to see how you're using it, what you've searched for, or where you are.

3 What's stored on your device

The app keeps a small amount of data in local storage on your device. None of it is ever sent to us or to anyone else:

• Your preferences — which monitoring locations you've chosen to show, which pollutant (or "worst pollutant" mode) you're viewing, and any colour threshold presets you've saved.
• A cache of the latest readings — so the map has something to show immediately the next time you open the app, before a fresh fetch completes.
• A rolling history of past readings — kept for up to 30 days (or the most recent 800 snapshots, whichever limit is reached first), so you can browse and play back how air quality has changed over time.

All of it lives in the app's private storage area on your device. Deleting the app deletes it.

4 Third-party services

To show you air quality information, the app makes network requests to three outside services. Like visiting any website, each of them may see standard request information — such as your device's IP address and the time of the request — as part of simply running their service:

• Map tiles OpenStreetMap — tile.openstreetmap.org — draws the background map.
• Modelled air quality estimates Open‑Meteo — air-quality-api.open-meteo.com — used for comparison against official readings and to estimate coverage between monitoring stations.
• Official monitoring readings Defra's UK‑AIR network — uk-air.defra.gov.uk — the UK government's official air quality data.

None of these requests include your name, an account identifier, or anything else that identifies you — only the coordinates and time ranges needed to fetch the relevant readings. Each provider runs its own service under its own privacy policy:

5 Location, analytics & advertising

This app doesn't request or use your device's location. Every location shown on the map is a fixed monitoring station or town coordinate built into the app — never where you actually are. The app also contains no analytics, no advertising, and no third-party tracking libraries of any kind.

6 Children's privacy

This app isn't directed at children, and — as covered in Section 2 — it doesn't knowingly collect information from anyone, of any age.

7 Retention & deleting your data

Because everything the app stores lives only on your device, you're always in control of it:

• To clear your history and preferences, delete the app, or use your device's storage settings to offload/reset its data.
• Historical snapshots older than 30 days are pruned automatically, and the app keeps at most the 800 most recent snapshots regardless of age.

8 Changes to this policy

If this policy changes, we'll update the effective date above and post the new version at this same address. The app has no way to reach you directly, so we won't be able to notify you individually — check back here if you'd like to review the current version.

9 Contact

Questions about this policy or the app can be sent to mike@myopnotes.co.uk.