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KOGG Presenter

The world's first portable, browser-based church presenter. Scriptures and lyrics on the big screen in seconds — with an AI voice that reads and auto-advances, lower thirds, and a transparent OBS overlay that barely touches your CPU. No subscriptions. No installs. Works offline. Sign in on any computer and your whole library is there.

Open the App → View Source (GitHub)
100% freeoffline-first~20 KB app no account needed3 Bible versionscloud sync

What it does

📖 Scriptures, offline

Full KJV, WEB and ASV Bibles bundled in the app — 66 books each, always available even with no internet.

🎵 Lyrics library

Split songs into verse/chorus slides automatically. Import lyrics straight from a web page and they're stored locally forever.

🔊 AI voice + auto-advance

One tap and the app speaks each scripture in a natural voice, advancing to the next verse automatically. The voice plays from the projector machine.

🎨 Themes & backgrounds

14 built-in gradient backgrounds, your own images, font, size, weight and alignment — all adjustable live during service.

📺 Lower thirds

Animated name/title banners for speakers — perfect over video in your livestream.

🎛️ OBS-ready

A transparent browser-source URL drops slide text and lower thirds on top of your OBS scenes. Zero plugins.

🗓️ Service plans

Queue songs and scriptures in order, save named plans, run the whole service from one screen or your phone.

☁️ Your library follows you

Create a free account and your songs, themes and service plans sync to any PC or phone you sign in on.

⏱️ Countdown & clock

Pre-service countdown timer with clock for the big screen.

Create your free account

One account, every device. Your library is stored under your account and pulled down whenever you sign in.

Accounts open as soon as cloud sync is enabled on this deployment — see README → “Enable cloud sync”. The app itself works fully without an account.

How to get it

  1. Phone / tablet / any computer — open the app, then in Chrome or Edge tap Install app / Add to Home Screen. It becomes a real app and works offline.
  2. Android APK — go to pwabuilder.com, paste https://kogg-presenter.pages.dev, and download the signed APK. Sideload it — no Play Store needed.
  3. iPhone / iPad — open the app in Safari → Share → Add to Home Screen. Full-screen and offline.
  4. Windows / Mac / Linux — open the app in Chrome or Edge → menu → Install. Standalone window, Start-menu icon, offline.
  5. OBS Studio — add a Browser Source with https://kogg-presenter.pages.dev/display.html?overlay=1 (1920×1080, 30 FPS). It's transparent: text and lower thirds float over your video.

Why another presentation app?

ProPresenter costs ~$29/month. EasyWorship ~$299. OpenLP and Quelea are free but need a desktop install and aren't phone-friendly. KOGG Presenter takes the best ideas — slide-based lyrics, verse-by-verse scriptures, lower thirds, OBS output — and runs them anywhere a browser runs, free, offline, operated from your phone, with your library synced to your account. Light on purpose: ~20 KB of code, no frameworks, no tracking — the OBS overlay runs on the same browser engine you already have, so your CPU stays cool.