Public transport is super easy, it can get you anywhere you want to go, I only used an uber twice in 5 days. (Side note, Ubers and taxis are the same thing in Singapore compared to how segregated they are in Australia. Felt very skeptical when I was waiting for my Uber and a taxi turned up.)
TIP: if you’re going to visit Singapore and take the MRT don’t buy a tourist pass (learnt this after reading the MRT reviews on TripAdvisor) the tourist pass is overpriced, purchase an EZI-Link card instead. It’s similar to a Smartrider in Australia, you load it with money and then when you return it at the airport MRT station they’ll refund you whatever credit you have left on it.
I thought I wouldn’t get time to visit the Southern Ridges so I didn’t put a lot of research into it and end up getting a little lost on the way. I caught a bus from Chinatown and ended up walking around in circles not really seeing anything. So I called an Uber to save the day and was so impressed by large trails that walk you through the trees.
It’s a lot less touristy than the other things I’d been visiting on my trip, a lot of locals use the trail for exercise. It takes you through big open green spaces with city views. A bit of a trek so I’d suggest appropriate walking shoes unlike the sandals I wore. Totally worth getting lost, would recommend this to anyone visiting, and its free, so yeah.