How a 91-year-old vibe coded a complex church event management system using Claude and Replit

John Blackman, a 91-year-old retired electrical engineer, shares how he used Claude and Replit to build a complex application for his church's community service events—with no prior software development experience and for less than $350. His app allows event organizers to create events, recruit volunteers, and manage sign-ups, with a standout feature for organizing free oil changes for participants. *What you'll learn:* 1. How John used Claude to create detailed product requirements and user stories 2. John's philosophy on embracing new technology throughout his career 3. The exact process for integrating third-party APIs (like VIN lookup for oil changes) with minimal technical knowledge 4. How he automated report generation for volunteer management and resource planning 5. How the software generates personalized "Impact Passports" for event participants 6. Why letting AI build without preconceived notions of "correct" implementation can lead to faster, more functional results 7. How to troubleshoot common development-to-production issues when working with AI coding tools *Brought to you by:* WorkOS—Make your app Enterprise Ready today: https://workos.com?utm_source=lennys_howiai&utm_medium=podcast&utm_campaign=q22025 Orkes—The enterprise platform for reliable applications and agentic workflows: https://www.orkes.io/ *Where to find John Blackman:* Website: http://johnbeng.com/ *Where to find Claire Vo:* ChatPRD: https://www.chatprd.ai/ Website: https://clairevo.com/ LinkedIn: https://www.linkedin.com/in/clairevo/ X: https://x.com/clairevo *In this episode, we cover:* (00:00) Introduction to John Blackman and his background (02:55) John's impressive career (03:59) How the church project started (05:06) Using Claude to create a development roadmap and requirements document (07:29) The concept of the Impact Passport for event participants (08:57) Generating user stories and requirements with Claude (10:32) The multi-tenant architecture with system and local church administrators (12:54) Building the application with Replit (13:32) Demo of the administrator interface and event management features (17:56) Specialized reports for different services (food pantry, vision center, oil changes) (20:30) The participant registration flow with QR code scanning (21:55) Adding new features like volunteer name tag generation (24:40) Troubleshooting AI "rabbit trails" during development (26:09) Challenges moving from development to production (27:13) John's lack of coding experience (29:42) The advantage of having no preconceived notions about implementation (30:25) Total development costs and timeline (31:31) Impact and reception from the church community (32:42) Lightning round and final thoughts *Tools referenced:* • Claude: https://claude.ai/ • Replit: https://replit.com/ • SendGrid: https://sendgrid.com/ • AutoCAD: https://www.autodesk.com/products/autocad/ *Other references:* • OpenAI API: https://openai.com/api/ • VIN (Vehicle Identification Number): https://en.wikipedia.org/wiki/Vehicle_identification_number • Multi-tenant architecture: https://en.wikipedia.org/wiki/Multitenancy • Role-based access control: https://en.wikipedia.org/wiki/Role-based_access_control • Excel: https://www.microsoft.com/en-us/microsoft-365/excel • DocuSign: https://www.docusign.com/ _Production and marketing by https://penname.co/._ _For inquiries about sponsoring the podcast, email jordan@penname.co._

John BlackmanguestClaire Vohost

Jun 23, 202540mWatch on YouTube ↗

EPISODE INFO

Released: June 23, 2025
Duration: 40m
Channel: How I AI
Watch on YouTube: ▶ Open ↗

EPISODE DESCRIPTION

John Blackman, a 91-year-old retired electrical engineer, shares how he used Claude and Replit to build a complex application for his church's community service events—with no prior software development experience and for less than $350. His app allows event organizers to create events, recruit volunteers, and manage sign-ups, with a standout feature for organizing free oil changes for participants. *What you'll learn:*
How John used Claude to create detailed product requirements and user stories
John's philosophy on embracing new technology throughout his career
The exact process for integrating third-party APIs (like VIN lookup for oil changes) with minimal technical knowledge
How he automated report generation for volunteer management and resource planning
How the software generates personalized "Impact Passports" for event participants
Why letting AI build without preconceived notions of "correct" implementation can lead to faster, more functional results
How to troubleshoot common development-to-production issues when working with AI coding tools
*Brought to you by:* WorkOS—Make your app Enterprise Ready today: https://workos.com?utm_source=lennys_howiai&utm_medium=podcast&utm_campaign=q22025 Orkes—The enterprise platform for reliable applications and agentic workflows: https://www.orkes.io/ *Where to find John Blackman:* Website: http://johnbeng.com/ *Where to find Claire Vo:* ChatPRD: https://www.chatprd.ai/ Website: https://clairevo.com/ LinkedIn: https://www.linkedin.com/in/clairevo/ X: https://x.com/clairevo *In this episode, we cover:* (00:00) Introduction to John Blackman and his background (02:55) John's impressive career (03:59) How the church project started (05:06) Using Claude to create a development roadmap and requirements document (07:29) The concept of the Impact Passport for event participants (08:57) Generating user stories and requirements with Claude (10:32) The multi-tenant architecture with system and local church administrators (12:54) Building the application with Replit (13:32) Demo of the administrator interface and event management features (17:56) Specialized reports for different services (food pantry, vision center, oil changes) (20:30) The participant registration flow with QR code scanning (21:55) Adding new features like volunteer name tag generation (24:40) Troubleshooting AI "rabbit trails" during development (26:09) Challenges moving from development to production (27:13) John's lack of coding experience (29:42) The advantage of having no preconceived notions about implementation (30:25) Total development costs and timeline (31:31) Impact and reception from the church community (32:42) Lightning round and final thoughts *Tools referenced:*
Claude: https://claude.ai/
Replit: https://replit.com/
SendGrid: https://sendgrid.com/
AutoCAD: https://www.autodesk.com/products/autocad/
*Other references:*
OpenAI API: https://openai.com/api/
VIN (Vehicle Identification Number): https://en.wikipedia.org/wiki/Vehicle_identification_number
Multi-tenant architecture: https://en.wikipedia.org/wiki/Multitenancy
Role-based access control: https://en.wikipedia.org/wiki/Role-based_access_control
Excel: https://www.microsoft.com/en-us/microsoft-365/excel
DocuSign: https://www.docusign.com/
_Production and marketing by https://penname.co/._ _For inquiries about sponsoring the podcast, email jordan@penname.co._

SPEAKERS

John Blackman
guest
Claire Vo
host

EPISODE SUMMARY

In this episode of How I AI, featuring John Blackman and Claire Vo, How a 91-year-old vibe coded a complex church event management system using Claude and Replit explores a 91-year-old builds church event software via Claude and Replit John Blackman, a 91-year-old church volunteer, describes turning a manual paper-based “impact weekend” registration process into a full web app by using Claude to generate a roadmap, user stories, and requirements, then feeding that into Replit Agents to implement the system.

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