John 3:16Direct
KJV · matched 100%For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
Every Bible verse, the second it's preached.
Kairos listens to your live sermon, detects every scripture reference (quoted or cited), and renders it on broadcast in under a second.
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Listeningthat whosoever believeth in him should not perish…
00:42:18
Sent to broadcast · NDI main
<1sDetection latency
6+Bible translations
100%Free, forever
12+Languages supported
↳ John 3 : 16
For God so loved the world,that he gave his only begotten Son,that whosoever believeth in him should not perish,but have everlasting life.
Kairos exists so the right verse lands at the right moment. The technology disappears. The scripture stays.
How it worksFrom the pulpit to the screen,
From the pulpit to the screen,
in three quiet beats.
One loop, repeated every time scripture surfaces in the sermon.
- Step 01
Listen to the room
Plug Kairos into your sermon feed (system audio, NDI, or any USB mic). It transcribes the pastor live with sub-second latency.
- System audio · NDI · USB mic
- Tuned for live preaching cadence
- Handles partials, asides, fillers
- Step 02
Recognise every verse
A vector model catches both explicit citations and quoted passages, even when the pastor paraphrases or partially recalls a verse, and surfaces them with a confidence score you can audit.
- Direct & semantic detection
- Cross-translation matching
- Confidence ring on every hit
- Step 03
Send it to broadcast
Kairos renders the verse with your church's theme and pushes it live over NDI to OBS, vMix, or any production switcher you already run.
- NDI overlay output (1080p)
- Slots into OBS · vMix · Resolume
- Theme designer included
FeaturesBuilt around the way you
Built around the way you
actually run a service.
Everything your media team needs to keep scripture on screen, and nothing they don't.
Headline capability
Detects what the pastor actually said, not just what they cited.
A semantic model recognises quoted scripture, not only chapter-and- verse references. Even when the pastor paraphrases or trails off mid-quote, Kairos surfaces the right passage with a confidence score you can audit at a glance.
- Direct citations: “John 3:16”
- Quoted scripture, even paraphrased
- Confidence score on every detection
- Cross-translation matching
Live capture
Real-time transcription that never blinks.
Sub-second latency on any input: system audio, NDI, or USB mic.
Latency
0.6s
From the word leaving the pulpit to the verse landing on the broadcast feed.
Slots in
Slots into the rig you already run.
OBS Studioswitcher
vMixswitcher
Resolumevj
NDItransport
Operator console
Every detection inline. One panel, one click.
94John 3:16Live
87Rom 5:8
71Ps 23:1
Broadcast themes
Polished overlays out of the box. Editable in-app.
John 3:16
Classic Dark1080p · 16:9
John 3:16
Sanctuary1080p · 16:9
John 3:16
Modern Light1080p · 16:9
Common questions
Frequently asked.
What teams ask before they put Kairos in front of a live audience.
Kairos is a free desktop app that detects Bible verses in real time from live sermon audio. It listens to a sermon feed, transcribes speech as it happens, identifies scripture references (including paraphrased quotations), and renders broadcast-ready overlays via NDI for OBS, vMix, and other live production tools. Kairos is built with Tauri v2, a React frontend, and a Rust backend.
Yes. Kairos is built specifically for live services and processes spoken words in real time, typically displaying referenced scriptures within seconds without interrupting the flow of the service.
You need a computer running Windows or macOS with an internet connection, an audio feed from your sound system, and a projector or display screen. Kairos works with your existing audio setup. No specialized hardware required.
Kairos supports KJV, ESV, NIV, NKJV, NLT, and more. You can switch between translations on-the-fly from the operator panel, and each translation is stored locally in your app database for offline use.
Download the free desktop app for Windows or macOS, connect your audio feed, and you're ready to go. Most teams are running in under five minutes. Full setup instructions and documentation are available in-app and on the GitHub repository.
Kairos is trained to recognize paraphrased scripture references, not just exact quotations, allowing it to surface the intended Bible passage even when the wording differs from the source translation.
Yes, but their role becomes simpler. Instead of manually searching and switching verses, media operators focus on visuals, livestreams, and overall service quality while Kairos handles scripture projection automatically.
No. Kairos is designed for church teams of all technical skill levels. Setup is straightforward, and once running, it operates automatically with minimal interaction during services.
Kairos is completely free for every church. There is no subscription, no account required, and no usage limits.
Yes. Kairos outputs broadcast-ready overlays via NDI, which integrates natively with OBS Studio, vMix, and other professional live production software.
Bring scripture to screen, as it's spoken.
Free for every church. Built for every operator. Ready in under five minutes.
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Free forever · macOS & Windows