AGL 463: Preston Zeller

About Preston

Preston Zeller sits at an unusual intersection: faith-tech founder, growth executive, documentary filmmaker, and abstract artist. As founder of Psalmlog, he’s building an AI-powered biblical guidance app that helps believers access relevant Scripture for any life situation—addressing the universal Christian challenge of knowing God’s Word has answers but not knowing where to look.

His approach is informed by proprietary research with 200+ Christians and 15 years scaling companies from $25M to $300M ARR. As Chief Growth Officer at BatchService, he oversaw the GTM teams, leading to two successful exits. He previously led digital marketing and growth at A Cloud Guru (acquired by Pluralsight for $2B) and ZoomInfo (IPO’d).

Preston brings equal depth to creative work. His documentary The Art of Grieving (2022) follows his year-long project of painting daily after his 35-year-old brother Colin died suddenly from a fentanyl overdose. The film explores grief through personal narrative, art therapy, and cultural history. It’s available on Amazon Prime, Apple TV, and Tubi, and has won Best Documentary at the LA Film Awards, Bridge Film Fest, and Love Wins International Film Festival.

Preston is based in Phoenix with his wife and children.

Today We Talked about

  • Faith and Tech
  • AI and Faith
  • Prompt engineering on models
  • RAG – retrieval, augmented, generation
  • Psalmlog
  • Documentary
  • 365 days of art
  • grief

Connect with Preston

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April 3, 2026
Preston Zeller

AGL 463: Preston Zeller

About Preston Preston Zeller sits at an unusual intersection: faith-tech founder, growth executive, documentary filmmaker, and abstract artist. As founder of Psalmlog, he’s building an AI-powered biblical guidance app that helps believers access relevant Scripture for any life situation—addressing the universal Christian challenge of knowing God’s Word has answers but not knowing where to look. His approach is informed by proprietary research with 200+ Christians and 15 years scaling companies from $25M to $300M ARR. As Chief Growth Officer at BatchService, he oversaw the GTM teams, leading to two successful exits. He previously led digital marketing and growth at A […]
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