Fręch has won one singles title on the ITF tour in her career. On 21 September 2015, she reached her best singles ranking of world number 374. On 13 July 2015, she peaked at world number 366 in the doubles rankings.
Fręch made her WTA tour debut at the 2013 BNP Paribas Katowice Open partnering Katarzyna Pyka in doubles.
Playing for Poland at the Fed Cup, Fręch has a win–loss record of 1–1.