Privacy Policy

App: RotaDays · Provided by ijinWorks

RotaDays does not require an account and does not collect any information that identifies you, such as your name, contact details, or email address. All records you create in the app — shifts, notes, and photos — are stored only on your device and are never sent anywhere.

The weather, air quality, and sunrise/sunset features are available only for locations in Korea and only when the app language is set to Korean. They work only after you set ‘My location’. If you do not use these features, no location-related information is sent.

1. Information sent to our server

To show weather, air quality, and UV information, only the following area codes for the area you selected are sent to our server. These are public forecast codes covering areas several kilometers wide and cannot identify where you live or work.

Sent Not sent
· Korea Meteorological Administration forecast grid numbers (two numbers, an area about 5 km × 5 km)
· Mid-term forecast region codes (city/county level)
· Name of the nearest AirKorea air quality monitoring station
Street address · neighborhood name · GPS coordinates · device identifiers · account information · shifts · notes · photos

The server stores forecast data per area code only and does not record which user looked up which area. The stored data therefore cannot be used to identify any individual.

* As with any internet connection, technical information needed to connect, such as your IP address, may be processed by Google Firebase infrastructure. RotaDays does not store or use this information.

2. Location information

3. Retention

4. Third-party services

Service Purpose
Korea Meteorological Administration (Public Data Portal) Weather, temperature, precipitation probability, humidity, and wind forecasts
Korea Environment Corporation AirKorea (Public Data Portal) Real-time PM10 / PM2.5 measurements
Open-Meteo (open-meteo.com) PM10 / PM2.5 and UV forecasts
Google Firebase
(Cloud Firestore · Cloud Functions, Seoul region)
Storing and delivering forecast data

We do not provide personal information to any of these services. When our server requests forecasts, it uses only grid numbers, forecast region codes, station names, and the representative coordinates of the grid center, and never sends information about your device or identity.

5. Data sources

6. Data transfer and your rights

7. Children

RotaDays is not directed at children under 14 and does not knowingly collect personal information from children.

8. Changes to this policy

If this policy changes, we will let you know in advance through an in-app notice or on this page.

9. Contact

For questions about privacy, please email ijinworks@gmail.com.


Effective date: October 15, 2026