The HSE launched it on Monday evening, after it cost over €850,000 to develop.
It identifies users who've been within two metres of a confirmed case and notifies them through their smartphone.
Health Minister Wicklow TD Stephen Donnelly says it's essential for managing further outbreaks.
While concerns are being raised about privacy, designers say it has been developed with privacy by design at its core, using the exchange of anonymous codes, and information isn't stored on a government server.
Wicklow Test Wait Times Remain More Accessible Than Many Other Areas According To RSA
Major Funding For Wicklow Infrastructure Will Boost Housing
Council Calls For Department Action as TB Crises Takes Hold In Wicklow
Bray Councillor Caroline Winstanley Elected Cathaoirleach Of Wicklow County Council
Fresh Search Underway In Co Wicklow In Jo Jo Dullard & Deirdre Jacob Investigations
