Gymnastics career
Yap began training with the Singapore national team in 2022.
Yap won the junior all-around title at the 2024 Singapore Championships. At the 2024 Junior Asian Championships, Yap placed ninth in the balance beam qualifications but advanced into the final due to the two-per-country rule. She went on to win the silver medal in the final. She also placed eighth in the floor exercise final, seventh in the all-around, and fourth in the team competition.
Yap became age-eligible for senior competitions in 2025 and won the senior all-around title at the 2025 Singapore Championships. She then made her senior international debut at the Asian Championships and placed 15th in the all-around. She made her World Championships debut in Jakarta and advanced to the balance beam final in seventh place with a score of 13.300. This made her the first-ever gymnast from Singapore to advance into a World Championships final. In between the qualifications and the final, Yap flew back to Singapore to take her O-Level exams. She went on to place sixth in the final with a personal-best score of 13.333.
In December 2025, Yap represented Singapore at the Southeast Asian Games. She competed on balance beam and won the silver medal on the event, alongside her sister Emma who won silver in the floor event.
On 19 March 2026, Yap received the inaugural Young Singaporean of the Year award from The Straits Times for the year 2025.
Yap competed at the 2026 Asian Championships in June 2026. She finished thirteenth in the all-around and qualified for the balance beam and floor exercise finals, in which she placed sixth and fifth, respectively. Her performance at Asian Championships allowed her to secure an individual all-around spot at the 2026 World Championships.
At the 2026 Commonwealth Games, Yap won the silver medal in the balance beam final. This tied Singapore's best-ever finish in gymnastics at the Commonwealth Games, matching Lim Heem Wei's silver medal in the same event in 2010. It was also Singapore's first medal in any sport at the 2026 games.
