Sister 4+

Safety for women

Wave Application S.L.

Designed for iPhone

    • 3.8 • 17 Ratings
    • Free
    • Offers In-App Purchases


Sister is a personal safety app that protects you everywhere at all times, offering security and immediate help.

With Sister you can:
- Share your live location with your friends or any trusted contact.
- Follow the safest route and avoid dangerous neighbourhoods.
- Activate a deterrent alarm.
- Ask your contacts for help and, if you want, call the emergency services.
- Register evidence: on SOS mode your phone will record audios and take images that are stored confidentially in Sister’s cloud.

How does it work?

Start your awesome sport day, trip or party night with security: share your live location with your friends, mum or partner to feel safer on your way.

If you add your destination, the GPS will guide you along the safest route. Explore the different map views to see and avoid dangerous neighbourhoods, where other Sister users like you have recently asked for help.

Once you reach your destination, stop sharing your location: just insert your PIN and log off.

Are you in danger?

If you feel threatened click on SOS; we'll notify your trusted contacts on Sister that you need help. Also, your phone will record audios and take images of the surroundings that will be stored only on in Sister’s cloud to help you file a complaint if you need.

Sometimes, unfortunately, we need professional help; that is why the emergency services’ number will be displayed on your screen for you to call with just a click.

Are you fine or was it a false alarm? 

Cancel the alert with your PIN; we will inform your contacts that you are safe and sound!

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.

What’s New

Version 2.7

- Now earn points while using Sister to redeem them on Geocash
- Bug fixes
Walk home safely with Sister and feel safe everywhere you go!

Ratings and Reviews

3.8 out of 5
17 Ratings

17 Ratings

12yobuttcrack ,

Can’t make account

I think this app would’ve been really wonderful but when I tried to start it, I couldn’t even sign up for the app or add my phone number because I couldn’t see the continue on my screen, it would disappear and I couldn’t even continue on into the app.

PUPPY LOVE🐶🦮🐩🐕🐕‍🦺 ,


So right now I am entering my phone number, what do I press to move on after entering it?????

user334454322 ,


I LOVE the idea of this app, but when actually used it is super subpar. The fake phone call was a main attraction for me but that can only be accessed through premium. Likewise, only contacts that have sister downloaded can help you, and the alert doesn’t really do anything if you are actually in danger… just use find my friends and call the police

Developer Response ,

Hi! Sister is more complete than that! You can use it at your own pace, if you want to use it for free you have: location sharing, alarm, navigation, SOS button, police call and recoding of evidence. Premium is very accessible - around $25 a YEAR- and includes fake call, SMS and risk zones map. It really depends on your needs! Sister is made specifically to help women, so we hope you'll eventually give us another chance. Thank you!

App Privacy

The developer, Wave Application S.L., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Contacts
  • User Content

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Contact Info
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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