iPhone Screenshots


One Scream is a voice-activated personal safety app for women and teenage girls. Have your phone nearby and One Scream can detect a panic scream (even from the bottom of your bag), identify your location and send for help.

We’re new! Use the app; help us develop it.


A panic scream is a woman’s innate response to danger. It’s louder and more complex than other sounds and linked directly to fear.

One Scream is programmed to detect a call for survival, not just loud noises and playful screaming but urgent, guttural screams that signify genuine distress.


----- One Scream can recognise only one distinct sound -----

The app picks up panic screams from girls aged 14+ and women under 60
Providing your phone has a signal, this wakes up the app to sound an alarm


----- Uncomplicated personal safety protection ------

Add up to 3 people to be notified if you panic scream; your Helpers
Allow One Scream to use your microphone so the app can hear you scream
Allow access to your location so the app can send it to your Helpers
Allow push notifications so you can cancel an alarm if you need to
Press the Play button to turn on One Scream and Pause to turn it off


When One Scream is on if it detects a panic scream it activates an alarm on your phone.

You hear a loud siren, the phone vibrates and lights flash. A notification pops up to give you 12 seconds to press it and cancel the alarm if you need to.
After 12 seconds, both an automated voice call and a text message is sent to your Helpers to deliver the One Scream alert, which includes your name and location.
Providing your Helpers pick up the phone, the line stays open after the One Scream alert is delivered so they can hear you and gather more information for the police.

- We need YOUR help to make One Scream powerful

We’re not just an app, One Scream is building a community for women and girls, including anyone who wants to help protect them, like Dads, partners, teachers or colleagues. Talk to us!

- Let us know what works and what doesn’t:

Chat in the app (click the speech bubble) or email help@onescream.com
Enjoy free use of the app for this version.


Visit www.onescream.com

-- Important --

One Scream can’t hear you when you’re on a call, if your phone is off, or if you’re in a loud environment like at a concert or on a rollercoaster. The app won’t work if you have no phone signal or are using another app that uses the microphone. It also can’t detect a scream if your voice is changed by the effects of alcohol or drugs.

One Scream does not record conversations or calls to Helpers.
The app can only detect panic screams and does not track your location in real-time.

We respect your privacy and exist only to empower women and teenage girls.

(One day we’d love to offer One Scream to everyone, but young girls, seniors and males sound different when they scream. We’d have to build a separate app for that.)

1) Use One Scream, 2) Share it with others, 3) Make it stronger to empower women and girls: Tell us what works and what doesn’t to help shape the app. Chat to us within the app (use the speech bubble) or email help@onescream.com.

Please note: "Continued use of GPS running in the background can dramatically decrease battery life."

What's New

Version 5.10

Small bug fixes.

Ratings and Reviews

4.9 out of 5

9 Ratings

9 Ratings

Best app


I always use one scream on my way back, especially late at night. I feel safer and more confident knowing there’s an app that can automatically activate and alert close ones when I’m in trouble.

Definitely recommend

Britney Lutt

I’ve been using One Scream for about 6 months now and it’s made a huge difference to my confidence. Especially when walking home from the tube station late at night.

Incredible sense of security


When cycling I find the app really useful and makes me comfortable cycling in the evenings. Easy to navigate and simple and safe to use.


One Scream Ltd
38 MB
Requires iOS 10.2 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad Wi-Fi (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation) and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© One Scream Ltd.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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