From pulpit to every screen, instantly.
Aleph turns live preaching into on-screen scripture, projects thousands of offline hymns and worship lyrics, and drives slides, notes and timers — styled with animated themes and sent over multi-output NDI to OBS, vMix and sanctuary displays.
Free for Windows, macOS and Linux • Hymns work offline
13,700+
Hymns ready offline
6+
Bible translations included
6-in-1
One app, from verses to timer
From sound check to benediction
From the first audio check to the final blessing — a single operator with one app covers every moment.
Listen
Plug in your sermon audio. Aleph transcribes as people speak and files notes and transcripts on its own.
Detect & pick
Scriptures surface from quotes or citations. Search 13,700+ hymns, your songs and slide decks from the same window.
Theme once
Shape lower-thirds to full-screen looks with plates, shadows and moving gradients — a distinct theme per display.
Present everywhere
Send verses, hymn stanzas, lyrics, timers or slides live through multi-output NDI to OBS, vMix and in-house screens.
A full toolkit for service day
Verse spotting plus the rest of the morning: hymns, lyrics, decks, notes and timing — styled once, live on all outputs through NDI.
Live AI verse spotting
Follows the sermon feed, converts speech to text on the fly and pulls up passages from direct mentions or loose paraphrases. The operator stays in charge — suggestions never override what's already live.
13,700+ hymns without internet
A complete hymnal lives inside the app, searchable by number, title, opening line or any lyric. Open a hymn for credits, key and meter, then push any stanza to the screens in one click.
Lyrics that follow the song
Store songs with Verse, Chorus and Bridge parts picked out automatically. Every stanza becomes a self-sizing themed slide with keyboard stepping and JSON sharing.
Announcements and slides
Combine pictures, clips and PDFs into a single deck. Put anything on air with one click, crossfade between cues, jump with keys 1–9, reorder freely — everything saves itself.
Animated themes, many outputs
Craft everything from lower-thirds to full-screen layouts in the theme studio with motion gradients, then feed the sanctuary, stream and overflow each with its own look.
Timer, notes and quiet updates
A stopwatch plus countdown with lap log and red under-ten-seconds warning, sermon notes captured by themselves with export, and background updates that apply when you quit.
Fits your OBS & vMix rig
Each content kind — passage, hymn, lyrics, timer, slides, blank — renders to full-resolution NDI. Slot Aleph into the production chain you already own.
Notes that write themselves
Jot thoughts by hand or let live transcription draft them for you, with a preview list, a calm focus view and one-click JSON backup for moving machines.
Calm control mid-service
One Live panel switches passage, timer, lyrics, slides and blank. Step with the keyboard and walk verse ranges while keeping gaps like 1, 3, 5 intact.
Built for your team
Church media teams
A single volunteer runs passages, hymns, lyrics and decks — no swapping apps mid-sermon
Livestream operators
Separate NDI feeds with their own styling for the broadcast, hall and overflow rooms
Worship leaders & events
Thousands of offline hymns, a reusable songbook and a stage timer, from rehearsal to revival
Why teams switch
Retire the Sunday-morning scramble across four programs. Aleph holds scripture, song and stage cues in a single operator view.
Without Aleph
- A verse app plus a hymnbook plus slides plus a timer
- Retyping words while switching programs
- Lost references and awkward silence
With Aleph
- Passages, hymns, lyrics, decks, notes, timing
- Any stanza or slide on air in one click
- Motion themes across many NDI outputs
Simple, honest pricing
The app is free and will forever remain free. Cloud transcription is the only thing that can cost money — and only when you opt into it.
Free offline service · No API key
₦0
Offline transcription for every congregation, every Sunday.
- Whisper transcription, running on-device once downloaded
- ₦0 a sermon — no key, no login
- Hymns, lyrics, decks, notes and timer all bundled
- Suited to pricey data or shaky venue internet
Online service · Your own API key
~$0.73 / 2-hr sermon
Cloud pace and precision billed straight by Deepgram — close to ₦1,120 at today's rates, cheaper than a couple of gigabytes of mobile data.
- Nova-3 streaming boosted with Bible keyterms
- Use your personal Deepgram key — billed by them, near $0.73 per two-hour sermon
- Their $200 starting credit stretches to about 273 sermons (Approximateley 5years of weekly 2-hour gatherings)
- Swifter, sharper live spotting for bigger auditoriums
Around ₦4,480 monthly for four weekly gatherings, once the starter credit is spent. Nothing goes to Aleph — no membership, no login, no per-minute surcharge. Figures track Deepgram's promo pricing; naira amounts drift with exchange rates.
Questions, answered
Aleph is a free, open-source presentation suite for worship gatherings. It spots Bible passages live in sermon audio, shows 13,700+ offline hymns plus your own song lyrics, runs picture, video and PDF decks, keeps sermon notes and a service timer — all dressed in motion themes and delivered over multi-output NDI to OBS, vMix and hall screens. It pairs a React interface with a Tauri v2 and Rust core.
That's its home ground. Aleph was shaped around live gatherings and converts speech as it happens, usually putting the mentioned scripture on screen within seconds while the preaching flows on undisturbed.
Any Windows, macOS or Linux computer, a sound-desk feed and a projector or display. Aleph slots into the audio chain you already have and sends video out over NDI to OBS, vMix or straight to screens — nothing exotic to buy.
KJV, ESV, NIV, NKJV, NLT and others. Flip versions mid-service from the operator panel; every text lives in the on-device library for offline use. Verse ranges hold their gaps (such as 1, 3, 5) and reload by themselves after a version switch.
The venue connection doesn't matter. Aleph carries 13,700+ hymns and 69,600+ stanzas in a built-in library with full-text lookup across numbers, titles, opening lines and every lyric. Narrow by hymnal group, inspect credits, key, metre and category, then send any stanza live — with tune and sheet-music links beside it.
That is the whole idea. Keep songs whose Verse, Chorus and Bridge parts split themselves apart, assemble image, video and PDF decks with fades and number-key cues, and run a stopwatch or countdown with lap history plus a red warning under ten seconds. The Live panel flips between Passage, Timer, Lyrics, Slides and Blank without ever wiping the live output by mistake.
Shape anything from lower-thirds to full-screen scenes in the theme studio — text backplates, shadows, outlines, picture fills and drifting gradients. Then open as many NDI destinations as you need — hall, stream, overflow — each wearing its own theme and feed name, rendered at full sharpness even for interface-driven slides.
Fetch the free desktop build for Windows, macOS or Linux, hook up audio, choose a look and go — most crews are live inside five minutes. Fresh releases land quietly in the background and apply on restart. In-app guidance plus the GitHub repo cover the rest.
Aleph looks past exact wording and hunts for the meant passage, so a loosely retold verse still brings up the right text even when the phrasing strays from the printed translation.
Yes — but the job gets lighter. Rather than hunting and flipping verses by hand, your media volunteers polish visuals, mind the stream and shepherd service quality while Aleph carries the scripture load.
Deliberately gentle. Aleph welcomes crews of any skill level: installation is plain, and once running it largely minds itself through the gathering with barely a click needed.
The app is free and open source — no membership, no login, no licence fee. The built-in tier transcribes offline through Whisper at ₦0 a sermon. For cloud pace, paste in your own Deepgram key: their $200 starter credit spans about 273 two-hour sermons, afterwards near $0.73 (about ₦1,120) per sermon, billed by Deepgram alone.
Smoothly. Aleph pushes production-grade visuals over NDI, which OBS Studio, vMix and fellow live-production tools ingest natively.
Entirely. Aleph ships unsigned — no paid Apple or Windows certificate backs this free project — so both platforms caution you once. On Windows pick More info, then Run anyway. On macOS move Aleph into Applications, then under System Settings → Privacy & Security choose Open Anyway beside the Aleph notice. It happens a single time. Should macOS call Aleph damaged (releases through v0.3.0), run in Terminal: xattr -cr /Applications/Aleph.app
Windows 10 or 11 on 64-bit hardware, macOS 11 Big Sur or newer on Apple Silicon, or a 64-bit Linux distro. No Intel Mac build ships — Intel Mac owners can compile from the GitHub source.
Give your congregation every single word
Gratis for Windows, macOS and Linux • Hymns work offline