For my mother who has asthma,
We tried to make this app simple and intuitive.
This app provides national PM10 / PM2.5 / O3 pollution map in South Korea.
Since the first release in 2015, this app have been growing up based on user feedbacks.

• High-efficiency GPS battery usage optimization

• Most seamless Watch Complication data-sync
(Include Watch 4 Infographics face)

• Realtime tracking : Detect 'bad' condition and prompt user an alert

• 'Siri shortcut' for visual impairments and car drivers
(Above iOS12, WatchOS5)

In App Purchase Information

We've added in-app purchase that many users have been requesting.
Even thought some users have asked for a one-time purchase for unlimitedly service, we've prepared 'subscription type' purchase in the app since the continuous server maintenance expense.
Please understand that we are not afford to provide one time purchase for unlimited service.
Instead, we have prepared it at an affordable price so that you can use it freely.
For the menu, please press 'info' button at bottom right corner > 'Purchase subscription'

2 kind of subscriptions are available.

• Convenience Kit (3 months / $0.99)
• Convenience Kit (1 year / $2.49)

With subscription purchase, below features are provided.

• No advertising
• Unlimited realtime tracking

Subscription revenue will be used for building better service. If subscription isn't cancelled before 24 hours prior to the end of the current period, subscription renews at the purchased price automatically.

• Payment will be charged to iTunes Account at confirmation of purchase(
• Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.
• Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal.
• Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings( after purchase.
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.

Visit here ( for detail guide of subscription management.

Terms of use :
Privacy Policy :


Inquiry / suggestions

What’s New

Version 1.13.5

- Corrected misspellings


Won Cheul Seok
72.1 MB

Requires iOS 10.0 and watchOS 3.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Korean

Age Rating
In-App Purchases
  1. Convenience Kits S$ 0.98
  2. Convenience Kits S$ 3.48


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

You May Also Like