Air cooler no longer enough in Bangalore?

For years, fans were sufficient for me in Bangalore. I never needed an AC before, but this year's heat has me reconsidering. I have been sweating indoors during the day and even nights have been a bit uncomfortable.

I am curious about those who added an air cooler in the last year or two.

For those using air coolers in apartments, did they make a meaningful difference during the summer heat, or did you eventually find that an AC was necessary to stay comfortable?