Contact and support

No, no account is required. There is no sign-up, no email, no password and no social login. Your cities, alerts and history are stored on your device. Details in the privacy policy.

From public air quality monitoring services and official weather models, complemented by real station measurements where they are available. The app uses no sensors of its own. The sources relied upon and their licences are set out in the legal notice.

Because the scales differ: the European index runs from 1 to 6, the US index (AQI) up to 500, and the same concentration does not produce the same number. Sources and model grids also differ. You can choose which scale to display in the app settings.

The free version covers the essentials: real-time index, pollutants, weather, pollen, map, ranking, widget and the current day. A Premium subscription removes advertising and unlocks the advanced features. What each plan includes is shown in the app, on the subscription screen.

From the subscription screen in the app, through your Apple or Google account. The available plans and the exact price are shown in the app, depending on your country and store — that is the only up-to-date reference. The terms (renewal, cancellation, any free trial, refunds) are set out in the subscription terms.

From your store account. On iOS: Settings → [your name] → Subscriptions → Air Quality → Cancel. On Android: Google Play → profile → Payments and subscriptions → Subscriptions → Air Quality → Cancel. Cancellation takes effect at the end of the period already paid for. Uninstalling the app does not cancel the subscription.

Open the subscription screen and tap "Restore purchases", signed in with the same Apple or Google account used for the purchase. A purchase made on the App Store cannot be transferred to Android, and vice versa.

Your location is used to show the air where you are, but it does not leave the device as-is: it is rounded to the model's grid — around eleven kilometres in Europe — before any network request. No movement history is built, and location remains optional: you can simply pick a city.

Advertising funds the free version and the paid data feeds behind it. In Europe, a consent message lets you accept or refuse personalised advertising: if you refuse, the app remains fully usable and ads are simply non-personalised. Premium removes all advertising. See the privacy policy.

Check that notifications are allowed for the app in your phone settings, that the alert is active for the city concerned, and that power-saving mode or background restrictions are not blocking the app. Since alerts rely on a system background task, delivery may be delayed: they are not a safety device (see the health disclaimer).

On iPhone, widgets require iOS 17 or later. Open the app at least once after installing, then add the widget from your home screen. Updates are periodic and handled by the system, so a slight delay is normal.

Since your data is kept on your device, simply delete a city or an alert in the app, or uninstall it to erase everything permanently. We hold no account in your name. If a subscription is active, remember to cancel it separately from your Apple or Google account.

iPhone and Android, in about twenty languages, with worldwide data coverage. The store launch is imminent.

Write to contact.airquality@devolim.fr, ideally with your phone model and the app version (shown at the bottom of the settings). Your feedback shapes the next updates.