This is a partial quote from a Cookie News article.
https://v.daum.net/v/20260803092350959
https://www.kukinews.com/article/view/kuk202608030033
A unified application that allows you to book KTX and SRT tickets in one app was launched on the 3rd.
The Ministry of Land, Infrastructure and Transport announced that it will provide the unified app 'Korail+' from 9 am on this day with Korea Railroad Corporation (KORAIL) and SR.
Starting September 1st, KTX-SRT integrated trains can be booked from 10 am on the 5th through Korail+ and KORAIL Nuuri집. Train schedules, fares, and other booking information can be checked in advance at both Nuurijips and railway stations from 10 am on this day.
However, since train tickets are available for booking one month in advance, the booking method may vary depending on the train operation date for the time being.
For trains operating in August, KTX can be booked through Korail+ or the existing KORAIL Talk, and SRT can be booked through the existing SRT app.
In order for users who have not yet installed or updated the unified app to book tickets, the existing KORAIL Talk and SRT app booking functions will be provided for a while even after September 1st. However, only non-member bookings are possible through the SRT app, so integrated benefits such as mileage and discounts may be limited.
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App Store link (same as existing KORAIL Talk)