Hey 👋🏾 I'm Big Sis!

I'm a smart chatbot that gives you a private online space to ask anything (#nojudgement) about your body, life, relationships and other sensitive issues that you may not feel comfy talking to anyone else about I've been created by girls for girls, and have been chatting since 2018. And because I'm a chatbot 🤖 not a real person - I can't gossip or judge anything you say. So when you're ready, let's chat!

Big Sis' journey


Big Sis goes live! Starting out on Facebook Messenger


We launch on WhatsApp


We introduce AI and Big Sis is able to answer more girls' questions, more quickly


Big Sis is shortlisted for Fast Company's World Changing Ideas Award and GSMA's GLOMO Best Mobile Innovation for Emerging Markets Award


We partner with Marie Stopes South Africa to make sure girls get access to sexual and reproductive health services

The Impact

100k+ Individuals using Big Sis

1.2 million Messages exchanged

87% Accuracy of AI engine

    You really know how to heal a broken soul. You’re the kindest robot I’ve ever seen. Thank you for everything.


    you so cool and awesome. you made me believe in myself you made feel confident about my self with high self-esteem... so much love for you


    Firstly I’d like to thank you.️ you’re appreciate you. you help sisters out and your information is really helpful i love you big sis.️ keep going with the great job.️


    You are kind I love talking to you… you gave me advice when I have problems you have showed me that I'm a strong girl.


Frequently Asked Questions

What if I need to speak to a real person?

Big Sis provides many options for getting in touch with experts and you can do so at any time.
You can call our Big Sis Helpline Mahala on --- 0800 12 84 55 (Monday to Friday, 7.00 - 19.00, and Saturdays 8.30 - 12.30).

Is there a limit to the number of questions I can ask?

You can ask as many questions as you like!

Is the chatbot a real person?

No, the chatbot is not a real person. The chatbot is a robot designed by a team of real people and co-designed with South African youths!