🌸 EntreNosotras: The Digital Big Sister

See the demo also there: https://youtu.be/OGlo12aNq40

Inspiration

Our inspiration stems from a harsh reality in Peru: silence comes at a high price. According to UNICEF and Plan International, 99% of girls feel ashamed of their period at school, and 81% of boys believe menstruation is a disease.

We were moved by the story of "Maria," a 12-year-old girl who loses 20% of her school year not due to lack of ability, but because her biology "stole" it from her due to a lack of education. We wanted to build the tool to break that cycle: a "digital big sister" providing autonomy and knowledge where the system has failed, preventing over 50,000 girls a year from dropping out of school.

What it does

EntreNosotras is a digital ecosystem designed to empower girls and adolescents through three core pillars:

24/7 AI Assistant: Anonymously resolves doubts about sexual and reproductive health, eliminating stigma and the fear of asking.
Smart Cycle Prediction: Helps users understand their hormonal phases and plan their daily lives to avoid unexpected school absences.
Autonomy Library: Curated content that translates complex medical terms into human language, aligned with Peru's Law 31148 regarding menstrual health.

How we built it

We combined empathy with a modern and scalable tech stack:

Interface (UI/UX): Designed in Figma with a color palette (Purple and Pink) that conveys calm and safety.
Frontend: Developed with React and Tailwind CSS, prioritizing a Mobile-First design for accessibility.
Artificial Intelligence: We implemented a Large Language Model (LLM) with a specialized system prompt to act as a safe educational guide.
Algorithmic Logic: We used mathematical formulas to predict cycle phases: $$\text{Current Day} = (\text{Today} - \text{Start of Last Period}) \pmod{\text{Cycle Duration}}$$

Challenges we ran into

The biggest challenge was the tone of voice. Our research with over +200 users revealed that 90% reject medical jargon. We had to adapt our AI to be technically accurate yet humanly close. Additionally, we faced the technical challenge of ensuring absolute privacy, making sure no intimate question could ever be linked to a user's real identity.

Accomplishments that we're proud of

Achieving a functional MVP that integrates AI with reproductive education in record time.
Designing a solution with social and political viability, linked to current laws in Peru (Law 31148).
Creating a professional visual identity that turns a "taboo" topic into a natural and necessary conversation.

What we learned

We learned that in the FemTech sector, technology is only the vehicle; the true innovation is trust. We validated that adolescents aren't looking for generic search engines, but for personalized answers that understand their cultural and emotional context: $$\text{Social Impact} = \frac{\text{Education} \times \text{Technology}}{\text{Taboos}}$$

What's next for Entre Nosotras

Our roadmap for the future includes:

Offline Mode: To reach girls in rural areas of the Andes and the Amazon without stable internet connections.
Resource Map: Geolocated connection to health centers and hygiene product distribution points.
B2G Expansion: Partnerships with the Ministry of Education to make EntreNosotras an official support tool in national schools.