Koo is shutting down, co-founders Aprameya Radhakrishna and Mayank Bidawatka announced on Wednesday. Four years ago after it was launched as a competitor to Twitter (now known as X), Koo will cease operations after acquisition talks with “multiple larger internet companies, conglomerates and media houses” failed, according to the app’s founders.Koo is shutting down, co-founders Aprameya Radhakrishna and Mayank Bidawatka announced on Wednesday. Four years ago after it was launched as a competitor to Twitter (now known as X), Koo will cease operations after acquisition talks with “multiple larger internet companies, conglomerates and media houses” failed, according to the app’s founders.