When safe and practical, a lady that is in labor can and should call a car service on Shabbos to take her to the hospital. See this source from [Rabbi Moshe Heinemann](http://guidetohalachos.com/wp-content/uploads/2016/06/Guide-to-Giving-Birth-on-Shabbos-or-Yom-Tov.doc): > Riding to the Hospital > A woman need not spend Shabbos/Yom Tov at a > location close to the hospital or arrive at the hospital before labor > starts to avoid riding on Shabbos/Yom Tov. The order of preference in > arranging transportation for an expectant mother is as follows: >> A. 1st - Pre-arrange with a non-Jew. >> B. 2nd - Use a taxi service. (When phoning for a taxi, one should not reveal that a woman is in labor. >> Some taxi drivers hesitate to transport a woman in labor to the >> hospital. This is a suggestion, not a Halacha.) >>C. 3rd - Have a Jew >> drive the pregnant woman. The Jew should drive normally, e.g. using >> signals, brakes, lights, etc. The Jew should drive in the usual manner >> because if he chooses to perform fewer Melachos, he might cause an >> accident. My question is would using the Uber app be preferable to calling on a regular old fashioned telephone and using a taxi service? Is using the app doing less or more Melacha?