Summary of editorial
2 Pull-Up Bars, Parallel Bars, Monkey bar.
It is completely free and easy to get there. Just take the free Sentosa Express to Beach Station and then take the free Beach Tram (=bus shuttle) to the last station called Tanjong Beach.
The park is right next to the bus stop. Just cross the street and step onto the beach, you can't miss it. It is next to the volleyball fields in the back of the beach.