Ever sat in a church service where half the congregation couldn't understand the sermon? Spf.io (pronounced "spiffy-oh") is an all-in-one AI translation and accessibility platform built to break down language barriers in worship services, conferences, civic meetings, and everyday conversations.^1
Created by TheoTech, a company founded by Christopher Lim after experiencing firsthand how difficult it is for bilingual churches to communicate effectively each week, spf.io delivers real-time captions and translations in over 100 languages.^2 It works with platforms like Zoom, YouTube, StreamYard, OBS, and now ProPresenter, and supports in-person, online, and hybrid events. Attendees simply scan a QR code or visit a link on their phones to receive live captions and translated audio — no app download required.^1
Beyond live events, spf.io handles video and audio subtitling, document translation, slide translation, multilingual polls, and real-time multilingual conversations through its Convo feature.^1 Churches can customize the AI to learn their vocabulary, and the platform offers both autopilot mode and supervised AI where a human editor reviews captions in real time for higher quality.^3 Recent updates include real-time ProPresenter translation that automatically detects and translates slides the moment they appear on screen — including image-based slides via OCR — timed for Pentecost Sunday 2026.^4 Other recent features include text-to-speech voice gender switching so audiences can distinguish between speakers, a zoom-in feature for presentations, custom theme branding, interactive QR codes, and a private live translation mode with access codes and audio-only output for sensitive internal events.^5
What makes spf.io stand out is its deep roots in ministry. TheoTech also runs Project Pentecost, a movement helping churches reflect the multilingual diversity of God's Kingdom, inspired by Revelation 7:9.^3 The platform has partnered with Christianity Today Indonesia to accelerate Bible commentary translation and worked with the Theology of Work Project on custom biblical machine translation models.^7 Beyond the church, spf.io has expanded into civic engagement — the City of Elgin, Illinois now uses spf.io to provide live translation for city council meetings, enabling Spanish-speaking residents to participate in local government for the first time.^8
Why Christians Love It"This is the first time I felt included." — A non-English-speaking attendee at One Voice Fellowship, after her first service with spf.io translation^3
"The Lord has brought people from South America, Africa, the Middle East, and Eastern Europe into our church, and Spf.io has been one of our biggest tools in welcoming them and ministering to them." — Weston Duke, Pastor at Capital Presbyterian Herndon^4
"We're a small local church and always looking for volunteers. Connecting spf.io to ProPresenter lets us provide live translated slides without needing another operator." — Ben Doggett, Director of Worship at Capital Presbyterian Herndon^4
"With the spf.io Convo app, now we're able to have multiple people on a call in a group setting where we're speaking different languages, even more than two, and we're able to actually share our experiences, faith, and cultural expressions with one another." — Pastor Steven Zapolski, Founder of United Community Church^1
Notable- Founded by Christopher Lim, who left Amazon to build technology for the Kingdom through TheoTech^9
- Used at CES 2025 for live event translation of press keynotes^10
- Translated the Basics Conference 2024 and 2025 into 8 languages^11
- City of Elgin, IL adopted spf.io for live city council translation, reaching a 50%+ Hispanic population^8
- Real-time ProPresenter integration launched Pentecost Sunday 2026, with OCR for image-based slides^4
- Featured by Presbyterian Outlook, AI and Faith, reKindle, vFairs, 425 Business Magazine, and Fuller Seminary^9
- Enterprise clients include X Corp, Volvo, Accenture, Delta Airlines, Panasonic, Databricks, and Smartsheet^1
- Partners include Christianity Today, Theology of Work Project, RockRMS, and multiple Presbyterian denominations^7
- Free church resources page and pastor's guide to multilingual ministry available^12
