A comma (,) is a moment to pause briefly and catch your breath.

A place where you can breathe deeply in fresh air,

An app that helps you find a place to rest with peace of mind.

Adding a comma to your day.

With an air quality map that displays fine dust on the roads at a glance using colors,

we will let you know where it is safe to breathe today.

■ Pollution Color Map by Road

Roads on the map are colored from blue to purple, displaying pollution levels at a glance. Zoom in to check air quality by road, and zoom out to check air quality by region.

■ WHO 6-Level Air Quality Scale

We apply the WHO standard 6-level scale by default, which is stricter than the Ministry of Environment's 4-level scale. By subdividing the "bad" zones, we provide precise behavioral guidelines, such as wearing masks, refraining from outdoor exercise, and limiting outings.

■ Real-time 6 Types of Pollutants

Check real-time levels for PM2.5 (Ultrafine Dust), PM10 (Fine Dust), Ozone (O₃), Nitrogen Dioxide (NO₂), Carbon Monoxide (CO), and Sulfur Dioxide (SO₂).

■ Weather Information

View current weather, wind chill, hourly and 7-day forecasts, wind, humidity, and UV information all on one screen.

■ Air Quality Forecast

Plan your outings using the 72-hour pollution prediction timeline.

■ Smart Notifications

Receive alerts on air quality changes and air quality briefings at your desired time every day.

■ Home Screen Widget

Check current air quality and weather without opening the app. Supports three sizes: Small, Medium, and Large.

■ Permanent Notifications

Always check current weather and air quality information in the notification window.

■ Multilingual Support

Supports three languages: Korean, English, and Chinese. ■ Unit Settings

You can freely change the temperature (°C/°F), wind speed (m/s, km/h, mph), and precipitation (mm, inch).

Start your day free from fine dust worries with a comma.

■ Data Sources and Disclaimers

This app is not affiliated with any government agency and is an independent service that does not represent the government.

The sources of the information provided in this app are as follows:

• Real-time air quality and forecasts: Ministry of Environment Air Korea (https://www.airkorea.or.kr)

• Weather information: Korea Meteorological Administration (https://www.weather.go.kr)

• Air quality supplementary data: Open-Meteo (https://open-meteo.com)

• WHO air quality standards: World Health Organization (https://www.who.int/news-room/fact-sheets/detail/ambient-(outdoor)-air-quality-and-health)

The data in this app is collected via public APIs and does not guarantee real-time accuracy. For accurate information, please refer to the official website of each organization.

Inquiries: cjdsusdlf2465@gmail.com