We are looking for an experienced developer to help us build a custom AI-powered tool called the Positive Habits Developer (PHD). This tool is based on an upcoming book that contains 93 practical habits for improving mindset, leadership, health, and relationships. The goal of the tool is simple: A reader selects three habits from the book, answers a few short questions about themselves, and the system generates a personalized 30-day habit implementation plan. This is not a chatbot. It is a structured AI-powered generator with a clean interface and defined logic. The final output should be presented in a visually clean format and optionally exported as a downloadable PDF. Core User Flow User visits the tool on a webpage User selects 3 habits from a list of ~93 User answers a few short questions such as: personal goals schedule/time availability common obstacles preferred habit intensity AI generates a custom 30-day habit implementation plan Plan is displayed on the page User can optionally download the plan as a PDF Key Features Frontend Clean modern interface Habit selection interface Question flow / form Results page showing the generated plan Mobile friendly design Backend Database storing the 93 habits and related information Ability to send selected habits + user responses to AI Generate structured habit implementation plans Return formatted output to the frontend AI Integration OpenAI API or similar LLM Prompt structure that ensures responses stay grounded in the habit content Guardrails to prevent hallucinated content Output Structured 30-day habit plan Organized by week or day Optional PDF export Nice to Have Optional user accounts to save plans Ability for users to regenerate plans Deliverables The completed project should include: Fully functional web-based tool Clean and intuitive user interface AI plan generation using our habit content Structured plan output PDF export capability Documentation explaining how the system works Tech Stack (Open to Recommendations) Possible approaches include: Option 1 Next.js + Supabase + OpenAI API Option 2 Bubble (no-code) + OpenAI Option 3 Another modern stack you recommend We care most about: reliability scalability clean user experience Timeline Estimated timeline: 4–6 weeks About the Project The tool will help readers take the habits from the book and turn them into a personalized implementation plan they can follow for 30 days. Application Instructions Please include the following in your proposal: Examples of AI-powered tools or web apps you have built Your recommended technology stack Estimated timeline Estimated cost range Any suggestions you have for improving this tool Required Qualifier Questions To be considered, please answer the following: 1. AI Experience Describe an AI-powered application you have built. What was the AI model used and what role did it play in the system? 2. Content Grounding How would you structure the system so the AI uses the habit content we provide rather than inventing its own advice? 3. System Architecture Briefly describe the architecture you would recommend for this tool (frontend, backend, database, AI integration). 4. Similar Projects Have you built any AI tools that generate structured outputs such as plans, reports, or recommendations? If yes, please include links or screenshots. 5. Prompt Design How would you structure prompts to generate a high-quality 30-day habit plan consistently? 6. PDF Generation What approach would you use to generate a clean downloadable PDF from the generated plan? 7. Scalability How would you design the system so it could handle thousands of users generating plans without breaking? 8. Timeline What timeline would you estimate for building an MVP version of this tool? 9. Spam Filter IMPORTANT: To confirm you read this entire post, please begin your proposal with the word HABITS.