Our Approach

How we keep your data safe and our AI focused on what matters

AI That Stays in Its Lane

Our AI is specifically tuned to help you plan activities—not to diagnose, prescribe, or give medical advice. We've built guardrails to ensure it stays focused on what it does best: helping you organize meaningful self-care.

🎯 Purpose-Built Prompts

We've carefully crafted the AI's instructions to focus exclusively on activity planning, scheduling, and reflection. It's trained to redirect conversations back to planning when topics drift into medical territory.

🛡️ Active Guardrails

We use AWS Bedrock Guardrails to actively monitor and filter conversations. If the AI detects harmful content, medical advice requests, or topics outside its scope, it politely redirects you back to activity planning.

🤝 Complement, Don't Replace

The AI knows its role: it's a planning assistant, not a therapist. It will never claim to diagnose conditions, recommend medications, or replace professional mental health support.

Technical Implementation

Multiple Language Models

We use AWS Bedrock to access multiple large language models (LLMs), primarily Claude 3.5 Sonnet. Bedrock gives us enterprise-grade reliability and allows us to switch models as better ones become available.

Guardrail Configuration

Our guardrails block:

  • Medical diagnosis requests: "Diagnose my condition" or "What medication should I take?"
  • Self-harm content: Any instructions or encouragement for self-harm
  • Harmful content: Hate speech, violence, and inappropriate sexual content
  • Prompt attacks: Attempts to jailbreak or manipulate the AI's behavior

What We Don't Block

We intentionally allow discussions about:

  • Emotions and feelings (anxiety, stress, sadness)
  • Mental health conditions you're already diagnosed with
  • Activities recommended by your therapist
  • Challenges you're facing in implementing self-care

The goal is to support your mental health journey without overstepping into medical advice.

System Prompts

Every conversation includes hidden instructions that tell the AI:

  • You are a planning assistant, not a therapist
  • Focus on activities, scheduling, and reflection
  • Never diagnose, prescribe, or give medical advice
  • Encourage users to work with mental health professionals
  • Redirect off-topic conversations back to planning

Your Data Stays Yours

We take privacy seriously. Your activities, reflections, and conversations are encrypted and never shared. Here's exactly how we protect your information.

🔒 Encryption Everywhere

Your data is encrypted both in transit (when traveling between your device and our servers) and at rest (when stored in our database). We use industry-standard encryption to ensure your information stays private.

💬 No Chat Logs

We don't store your chat conversations. Once the AI responds, the conversation history is discarded. We only keep the structured data you create: your activities, plans, and reflections.

📧 Minimal Data Collection

We only collect what's necessary: your email (for login), your weekly plans, and completion reflections. No tracking pixels, no analytics cookies, no third-party data sharing.

Technical Implementation

Infrastructure: AWS

NoZeroWeek runs on Amazon Web Services (AWS), one of the most secure and reliable cloud platforms. We use:

  • DynamoDB: Encrypted NoSQL database for storing your activities and plans
  • Cognito: Secure authentication service for managing logins
  • Lambda: Serverless functions that process your requests
  • CloudFront + S3: Fast, secure content delivery
  • KMS: Key Management Service for encryption key rotation

Encryption Details

In Transit: All communication uses TLS 1.2+ encryption (HTTPS). Your browser verifies our SSL certificate before sending any data.

At Rest: DynamoDB tables use AWS KMS (Key Management Service) for encryption. We enable automatic key rotation annually. Even if someone gained physical access to AWS servers, your data would be unreadable without the encryption keys.

Chat Processing

When you chat with the AI:

  1. Your message is sent encrypted to our Lambda function
  2. Lambda sends it to AWS Bedrock (the AI service)
  3. Bedrock processes it and returns a response
  4. We send the response back to you
  5. The conversation is discarded—we don't log it

We only save structured data you explicitly create (like adding an activity to your library).

AWS Bedrock Privacy

AWS Bedrock has a strict data policy:

  • Your prompts are not used to train AI models
  • Your data is not shared with model providers (Anthropic, etc.)
  • Conversations are processed in real-time and not retained

What We Store

In DynamoDB, we store:

  • User ID (from Cognito)
  • Email address (hashed)
  • Weekly plans (activities, scheduling details)
  • Completion data (what you marked as done, bonus points)
  • Reflection notes (your written reflections on what worked)

We do NOT store:

  • Chat conversation history
  • IP addresses or device fingerprints
  • Browsing behavior or analytics
  • Third-party tracking data

Built by Someone Who Needed It

NoZeroWeek was created by Tom, an individual who struggled with reactive self-care and wanted a better way to stay consistent—not just for himself, but for the people who love him.

🎯 A Personal Need

Tom built NoZeroWeek because he kept having zero weeks—weeks where work consumed everything and self-care fell by the wayside. He needed a system that made planning feel natural, not like another chore.

❤️ For the People Who Care

The people who love us want us to take care of ourselves. NoZeroWeek exists to help you show up for yourself in the way your loved ones hope you will—consistently, sustainably, and without burnout.

🌱 Always Improving

This is a living project. Tom continues to refine NoZeroWeek based on his own use and feedback from others. It's not a corporate product—it's a tool built with care by someone who genuinely wants to help.

The Technical Journey

Why This Approach?

Tom tried existing wellness apps and found them frustrating:

  • Too many notifications that felt guilt-inducing
  • Rigid forms that made planning feel like work
  • Social features that turned self-care into competition
  • Paywalling essential features behind subscriptions

He wanted something different: conversational, private, and accessible.

Technology Choices

Tom chose AWS and Bedrock because:

  • Reliability: AWS has 99.99% uptime—your data is safe
  • Security: Enterprise-grade encryption and compliance
  • Privacy: Bedrock doesn't use your data for training
  • Cost: Serverless architecture keeps costs low
  • Scalability: Can grow from 1 user to 1 million without rewriting

Open Development

Tom believes in transparency:

  • The infrastructure is defined in code (Terraform)
  • The AI guardrails are documented and versioned
  • Privacy practices are clearly explained (this page!)
  • No hidden tracking or data collection

Why Free Forever?

NoZeroWeek's core features are free because:

  • Mental health tools should be accessible to everyone
  • Serverless architecture makes it affordable to run
  • Tom built this to help people, not to monetize them
  • The people who need this most often can't afford subscriptions

The essential features—planning your week, tracking activities, and building habits—will always be free. If we add premium features in the future, they'll be optional enhancements, never core functionality.

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