Millions of Indians have installed the Aarogya Setu, a contact tracing app that the government pushed as an essential tool in the fight against the coronavirus. Its website says it was developed by the National Informatics Centre and the Ministry of Information and Technology. Both, however, said they didn't know who created it, in response to an RTI query. The Aarogya Setu app was developed in the most transparent manner with public-private collaboration in record time to fight the coronavirus, the government later clarified.