Her frequent comebacks led to the coining of the term "Heintje Davids effect,"[1] referring to the phenomenon of repeatedly announcing a farewell only to return to performing.

Despite the family's theatrical background, Heintje, who was short, stout, and had a distinctively comedic voice, was initially deemed unfit for the stage by her parents.

Heintje Davids was a staple of the Dutch variety scene before World War II, performing in various revues, particularly at the Hollandsche Schouwburg and the Tip Top Theater.

In 1948, the city of Rotterdam honored her contributions to Dutch theater by awarding her the Louis Davidsring, a tribute to her family's impact on the arts.

Among her best-known songs are: Heintje Davids remains an iconic figure in Dutch culture, remembered for her unique voice, comedic talent, and the resilience that characterized both her career and personal life.