Day One Coach

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  Your daily focus, ready when you are. Start a coaching session in one tap.

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  Curated coaches for common goals, plus the ability to create custom coaches and share them via code with friends or your community.

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  Track your progress in real time.

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  Natural conversation with AI coaches that ask real questions and adapt to you.

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Coaching changes lives. The right guidance at the right moment can transform everything. But most people never access it because traditional coaching costs $200+ per hour, requires scheduling, and finding the right coach is overwhelming. Meanwhile, AI agents still feel too technical for everyday use. I've spent the last year building AI coaching systems in Notion that thousands of people use. I wanted to bring that same accessible experience to a mobile app that anyone could pick up and start using immediately. No setup, no confusion, just coaching. What it does Day One Coach makes expert guidance accessible to everyone through specialized AI coaches for productivity, fitness, wellness, and more. You get personalized action plans tailored to your context, progress tracking with streaks and weekly activity, and real accountability. The app remembers your preferences, checks in on progress, and adapts to your needs. It's like having a professional coach in your pocket who learns about you, keeps you motivated, and helps you actually make progress. How I built it I used Rork.com to rapidly prototype the UI and create a clean, minimal interface that makes AI coaching approachable. For the conversations, I integrated DeepSeek API and engineered detailed prompts so coaches ask clarifying questions, provide specific guidance with numbers and durations, explain the reasoning behind recommendations, and adapt to user context like energy level and available time. Sessions persist across app closes but reset daily. Multi-step plans track progress in real-time. Streaks build habit formation. Each coach has specialized system prompts for their domain. Challenges I ran into The biggest challenge was making AI feel like real coaching instead of generic chatbots. Early versions created obvious to-do lists like "put on shoes, go outside, walk, come back." I had to craft prompts that force the AI to ask questions, personalize plans, and provide actual value. Session management was tricky too. When should sessions persist versus reset? What happens at midnight? What if someone starts multiple coaches in one day? I settled on sessions persisting until completion or daily reset, with clear visual indicators. The home screen went through seven iterations to balance "what should I do right now" without overwhelming users. And I had to streamline the conversation flow to feel natural while staying actionable. Accomplishments that I'm proud of The AI actually feels like coaching. It asks good questions, provides specific guidance, and adapts to context. The design is clean and makes AI agents approachable for non-technical users. It's not just a chat wrapper but has progress tracking, streak building, and behavioral psychology baked in. And I went from concept to working prototype in days using AI tools. What I learned With AI apps, the quality lives in the prompts. Carefully structuring system prompts matters more than any UI flourish. Streaks and progress visualization impact retention more than adding features. The best version came from removing features, not adding them. And AI tools let me focus on product decisions rather than boilerplate code. Most importantly, free-form chat isn't coaching. The step-by-step plans, progress tracking, and accountability systems are what transform AI conversation into actual behavior change. What's next Voice coaching for hands-free sessions, especially during workouts. Deeper personalization with comprehensive user profiles. Context-aware notifications that check in at the right moments. Outcomes tracking beyond sessions and streaks. Coach customization for personalities and communication styles. Community features to share progress. API integrations with Apple Health, Google Calendar, and task managers. The vision is simple: make professional coaching accessible to everyone, everywhere, instantly. Note: The app is fully functional in TestFlight internal testing. The public TestFlight link requires Apple Developer account owner access, who I'm waiting to hear back from. I've provided the Expo build for immediate testing.

Built With

• deepseekapi
• native
• react
• rork
• typescript