Students said they felt safer with a new app that lets them discreetly send emergency messages on nights out.
The app, Flare, was created by three University of Cambridge graduates, with the aim of improving campus safety.
Co-founder Gabriel Brown said he hoped it would offer students "an extra layer of confidence" in situations where they felt uncomfortable or unsafe.
"Ultimately it's the kind of app you want but never want to have to use," said user Ruby Cline, 20.
Flare - Stay Safe, which launched last week, allows users to send pre-written emergency messages to trusted contacts over text, either through the app or by tapping a notification on their phone's locked home screen.
Mr Brown, 21, who created the free app with fellow King's College alumni Morgan Saville and Geno Racklin Asher, said they hoped it offered an outlet for students who did not feel comfortable calling the emergency services.
