What is Paku?

Paku is an air quality app for iPhone, iPad, Apple Watch, and Mac, built to help you monitor real-time air quality anywhere the PurpleAir network covers. PurpleAir sells affordable air quality sensors that anyone can set up, and has a huge network of crowd-sourced air quality data — but no app of its own.

As a native app, Paku is much faster than accessing PurpleAir on the web, and offers features the website can’t: widgets, Live Activities, push notifications, and more.

What’s new in 6.2.0: Nearby Alerts

The latest update, releasing July 30, introduces Nearby Alerts, a Paku Pro feature that brings air quality alerts with you wherever you go. Instead of watching a fixed sensor, Paku automatically switches to the best sensor near you as you move around, and notifies you the moment air quality crosses your threshold — and your location never leaves your device.

• Always relevant: Paku automatically follows the most accurate sensor near your current location.
• Real-time: get notified the moment air quality around you crosses your threshold.
• Private: sensor switching happens on-device; your location is never sent to a server.

Download the Nearby Alerts screenshots above (framed and unframed) right here.

Core Product Features

• Real-time map of PurpleAir sensors.
• View AQI, temperature, humidity, or raw particulate values.
• Gorgeous charts with a week of historical data for all measurements.
• Use favorites to quickly check multiple sensors.
• Favorites and settings sync between devices through iCloud.
• Check the AQI with Siri and Shortcuts.
•  Pro  Monitor AQI with Live Activities.
•  Pro  Choose from several alternate app icons.

• Several configurable widgets.
•  Pro  ‘Chart’ widget that can show any measurement Paku supports.
• ‘Big Stat’ widget for easy glanceability.
• ‘Air Quality’ widget with an AQI gauge.
• ‘EPA Color’ widget with a vivid AQI color.
• Widgets can show the nearest sensor or a specific sensor.
• Smart Select chooses the nearest accurate sensor to display.
• Widgets support:
• iOS and iPadOS Home Screen and Lock Screen.
• StandBy on iPhone.
• Apple Watch complications and Smart Stack.
• Mac Desktop and Notification Center.

•  Pro  AQI Alerts provide real-time air quality notifications.
• Nearby Alerts automatically follow the best sensor near you as you move around. (New in 6.2.0)
• Configure alerts for sensors to be notified when the AQI crosses a specified threshold.
• Improvement Alerts notify you when the AQI has improved under your threshold.

•  Pro  Add private sensors.
• Keep your sensor private and view it in Paku.
• See it on the map, and use it in widgets or alerts.

•  Pro  Details:
• Unlock AQI Alerts, Nearby Alerts, Live Activities, private sensors, chart widgets, and alternate app icons.
• 99¢/month, $9.99/year (1 week free trial), $69.99 lifetime.

Who makes Paku?

Paku was created by Pitou Technologies, LLC, a one-person venture from Kyle Bashour.

Media Assets

• Nearby Alerts screenshots (6.2.0) — framed and unframed.
• App screenshots — framed and unframed.

If you’re writing about Paku, you can request a promo code, or get in touch with any questions.