Health authorities also just can't keep up with the new cases and in recent days have been forced to publish more general summaries and regional information on cases.
Still, the government regularly releases updates and discusses cases in briefings, and Hong said he uses a wide range of other open-source resources like news reports to supplement official data.
"I gather all kinds of information for updates, and I include personal feedback from users," Hong said.
Another developer, Kwon Young-jae, runs a similar site with his wife, Ju Yeun-jin, who is also a software developer, but they've been overwhelmed by the surge in cases.
Their Wuhanvirus.kr shows a real-time tally of the infections, deaths and discharged patients from both South Korea and the world.
But Kwon said the soaring numbers meant he and his wife were hardly getting any sleep.
"It was easy to update the page up until the beginning of last week," he said.
"But with tens of new patients every few hours, it's starting to take a toll on us."
