The app maker at the heart of reporting issues in the Iowa caucuses has issued an apology and vowed to "apply lessons learned in the future."

"We sincerely regret the delay in the reporting of the results of last night’s Iowa caucuses and the uncertainty it has caused to the candidates, their campaigns, and Democratic caucus-goers," Democratic tech firm Shadow wrote on Twitter today, admitting for the first time the app was the company's creation.


"As the Iowa Democratic Party has confirmed, the underlying data and collection process via Shadow’s mobile caucus app was sound and accurate, but our process to transmit that caucus results data generated via the app to the [Iowa Democratic Party] was not," according to the company, adding the "issue did not affect the underlying caucus results data."