India, Dec. 1 -- A tech founder's nostalgic attempt to reduce her own screen time has turned into a viral business success, earning $120,000 (approximately Rs.1 crore) in sales within just 3 days.

Two years ago, Cat Goetze, who is known online as CatGPT, grew tired of constant smartphone use and wished for the simplicity of old-school landline conversations.

"I was kind of just sitting around [thinking] it'd be so cute if we still had landline phones and you could twirl the cord and talk with your friends. That just felt nostalgic and chic to me," she told CNBC Make It.

Goetze said that when she realised getting a landline required a new number and paid connection, she decided to build her own version. Then, using a thrifted pink clams...