Sister - Personal safety app

Offers in-app purchases

Sister is a complete personal safety app. Sister works based on real time location and it aims to prevent possible threats and respond in case of an emergency.

With Sister you'll be able to:

- Choose your trusted contacts and share your location with them whenever you feel insecure.
- Find or select your destination to see the safest and fastest route and the nearby police stations.
- Activate a deterrent alarm that will sound if you don't arrive at the time you have estimated.
- Activate SOS so that we can notify your trusted contacts and call the police if you want.
- Let your trusted contacts know you have arrived well and stop sharing your location entering your PIN.
- See the risk zones of your city on the map, following the areas where our users reported more emergency alerts.

How does Sister work?

The app works just as a family locator but with specific features to increase your safety. Discover how to use it to feel safe in any city.

Choose your trusted contacts

Set one or more trusted contacts, such as your partner or friends, to share your live location with them when you return home at night, go to work, or at any moment you want to increase your personal safety. Your live location will be sent to those you have chosen by the app or as a link via WhatsApp or SMS. You can also add a widget to get direct access on your phone screen so that you don't have to open the app.

Follow the safest route

You will see the fastest route to your destination along with the nearby police stations.

Activate a deterrent alarm

Once you set up the time it should take you to reach the destination, a loud alarm will sound if you don't confirm your arrival in the estimated time. You can deactivate it when you have arrived or at any moment entering your PIN.

In case of an emergency activate SOS

If you are in danger, activate the SOS mode on the app, through a widget or long press the high volume button of your smartphone. It will send your location to your contacts that are registered on Sister automatically and then show you the emergency services number for you to call if you want.

When you activate the SOS, if you have accepted the permissions to access your microphone and camera, your phone will start recording audios and taking pictures automatically. This material will be saved confidentially in our cloud. This way, if you ever need to file a complaint you can use this material.

See the risk zones of your city on the map

Sister is a collaborative app and you’ll see the areas where our users reported more emergency alerts.

Follow professional advice

Our psychologists have prepared about sexual harassment at work and in the street and toxic relationships.

Let your contacts know that you have arrived well

Once you have arrived at your destination, enter your PIN to stop sharing the location and to notify your trusted contacts.

Use it all over the world!

Sister works in any country. To ensure the best live location accuracy, Sister uses the technology of Wave Location Services, leader in location based technologies.

Sister is not just an app, it is a technological ally in the fight against sexual harassment. Currently, we work with international NGOs to improve the safety of girls and women around the world. Discover more at
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What's New

Hi there! We bring you exciting news with this version!

- Collaborate in your city: tell us how the route was and what you’d improve (street lightning, surveillance…).
- See the updated territorial hazard data of your city and country.
- View the risk zones on the security map, marked by other users.
- Earn points by inviting your friends to use Sister to get Sister Premium for free.
- Bug fixes and improvements.

Sister is the most complete and private safety app.
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Additional Information

October 27, 2020
Current Version
Requires Android
5.0 and up
Content Rating
Interactive Elements
Shares Location
In-app Products
$0.99 - $36.99 per item
Offered By
Wave App S.L.
C/ Apolonio Morales 21 Bajo D 28036 Madrid
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