§02
◐The Cast
Characters, locations and props. Already sorted.
Declassify
Mention someone in a scene and they get their own page. Open Elena, see every line she speaks. Open the silver lighter, see every scene that needs it on the truck.
Lucerna
by Luminos Film
Private beta. TestFlight invite only.
The page,
the plan, the set,
under one light.
A native macOS suite for screenwriters and the productions they ship. The whole film — first line to last shot — lives on your Mac. Not a tab in someone's cloud.
What we believe
Your script never leaves your Mac.
There's no server to send it to.
No account. No subscription. No tracking.
We literally can't read a word of it.
Pay once. It's yours forever.
We don't give a fuck about your data.
03 / 06
What's inside
One quiet app. From the first sentence to the last shooting day.
I
The Page
Write. Everything else listens.
The screenplay is the single source of truth. Formatting, cast, alternates, revision history, pace — it all falls out of the words as you type them.
✦The Page
Type plain text. Get a screenplay.
Slugs, dialogue, parentheticals, transitions. They format themselves while you write. No compile button. No preview pane. Just the page you'll send.
§03
✶Alternatives
Try the other ending. Keep this one.
Declassify
Spin off an alt ending, a different cold open, a new act break. Two versions side by side until you decide which one wins.
§04
◯History
Every draft kept. Every revision named.
Declassify
Bookmark any version of your script and come back whenever. Compare two drafts side by side. Restore yesterday's ending in one click.
§05
◑Insights
Know how your script paces.
Declassify
Minutes per character. Scene economy by act. Where the dialogue tightens and where it sags. Numbers that mean something. Glance at them, ignore them. Your call.
§11
◆Narrative integrity
The script that reads itself.
Declassify
Plot-hole detection flags first-use violations, missing payoffs, dangling threads, and timeline inconsistencies before a note ever comes back from the room. Character voice analysis surfaces the scenes where a character starts to sound like someone else — a drift score, not a gut feeling. The script catches its own mistakes.
§15
❖Themes
Every motif. Whether it paid off or dropped.
Declassify
Graph-native detection of recurring symbols, objects, and concepts across the screenplay. Motifs are first-class nodes — scenes express them, characters embody them. Status detection: introduced, developed, paid off, or dropped. A motif opened in act one and never closed gets flagged. Runs on existing scene embeddings. On-device.
II
The Plan
Turn the page into a plan.
Stripboard, budget, locations, casting. Change one line in the script and the schedule, the call sheet and the numbers move with it. Nothing re-typed.
▤The Stripboard
Schedule from the script you already wrote.
24 industry-standard breakdown categories, multi-unit shooting, custom strip colors. Drag into shoot days. Change one thing, the rest update.
§10
$The Ledger
Above the line, below the line, contingency.
Declassify
4-level hierarchy, chart-of-accounts coding, multi-currency. Run scenarios side by side. Change the script — the budget updates. Actuals land against estimates, line by line.
§13
⬡Casting
Actor library, considerations pipeline, cross-unit conflicts.
Declassify
Track every actor from first idea through contacted, auditioned, shortlisted, and signed. The cast library and the five-stage considerations pipeline now share the same substrate as scenes, locations, and budget — so the schedule can detect a lead actor double-booked across Main Unit and 2nd Unit on the same shoot day and flag it automatically. Foundation for call-time computation and cast budget projection.
§09
◇Scouting
Every location. Photographed and assessed.
Declassify
Address, photos, contacts, pros and cons. Track each spot from "to visit" to "scouted" to "approved" to "permits in hand". All in one place.
§08
☼On Set
Sunrise, sunset and golden hour. For every location.
Declassify
Pin a location and Lucerna works out the light, the weather window, the magic hour. The call sheet writes itself, with the right times for the right addresses.
§14
◬Budget intelligence
Which scenes cost the most. Which accounts are carrying the weight.
Declassify
The chart of accounts and every line item are now first-class entities — queryable across the same graph that powers narrative analysis. The Intelligence panel shows variance summary, top-8 costliest scenes, characters, and locations, and account totals rolled up to top-level categories. Ask which scenes are coded against a given account, or find line items semantically related to any production element.
§18
▦Wardrobe
Every costume. Whose it is, which scene it wears.
Declassify
Wardrobe is a first-class node in the production graph — not a prop with a category attribute. WardrobeView shows two modes: By Character lists each actor's items by scene, with descriptor, color, material, and era. By Scene shows everything worn in a given scene. Per-character costume continuity and per-scene costume lists drop out of the graph for free. Legacy props marked category=wardrobe migrate automatically.
§17
◧Colored Pages
Pink pages touched six scenes. Find them in one tap.
Declassify
Colored revisions are first-class graph entities. Lock a revision and it links via affects edges to every scene, character, location, and prop the round touched. The Revisions panel under Producer Mode shows impact by department: Story, Casting, Locations, Props, AD & Scheduling. Print a Revision Memo PDF with a colored cover banner for distribution when colored pages drop.
III
The Set
Then you shoot it.
On set: every take logged, every prop tracked, the pages each actor needs in one tap. Editorial gets exactly what it expects — from the same file.
◎Take Log
Every take. Status, lens, timecode, sound roll.
TakeLogView gives the script supervisor a master/detail layout: shoot days on the left, a full-column take table on the right. Slate, take number, status — OK, Hold, NG, or pending — day number, lens, camera roll, sound roll, in/out timecode, and comments. Status reads as a colored icon across the room. Add Take auto-fills slate from the selected scene and shot; take numbers advance from existing entries on the same slate that day. On-device. Mesh-syncs across every set device.
§20
⌗Sides & Day Pack
One click. Every actor has their pages for the day.
Declassify
SidesView sits under On-Set mode, beside the call sheet. The left rail lists shoot days chronologically — date, page-count chip, primary location. The right pane shows day header with revision color, scene list, and a cast section with a Generate Sides button per actor. Per-character sides cover one day, one character. Day Pack bundles every principal for the day into one PDF, ordered by scene-count descending — the heaviest role first. Same typography as the lockable screenplay PDF, stamped with the current revision color. The 1st AD's morning routine of copying scenes into a separate document and printing collapses into one tap. No server. No cloud upload.
§12
◈Continuity
Every prop, every wardrobe change, every bandage. Tracked.
Declassify
Continuity Guardian builds a per-scene state timeline for props, wardrobe, makeup, set-dressing, and character physical state. It validates both story order and shooting order — catching a gun fired with no reload cue, a bandage that silently vanishes, a prop destroyed on one shoot day but needed intact on a later one. The work script supervisors do with a paper notebook. On-device, linked straight to the scene.
§22
▥Editorial Handoff
Camera report and OK takes. Editorial gets what it needs.
Declassify
Every shoot day, Lucerna pours the take log graph into two outputs: a Camera Report PDF and an OK takes CSV. The PDF has a tinted cover banner matching the current revision color, a colored-chip status summary, and per-scene, per-shot tables with slate, lens, camera roll, sound roll, in/out timecode, duration, and comments — exactly what the script supervisor hands editorial. The CSV is UTF-8 BOM, CRLF, RFC 4180 — drops straight into Avid, DaVinci Resolve, or Premiere bin import with no massaging. The daily production report is now a graph-native node alongside takes, breakdown, schedule, and budget.
§16
♪Score & Sound
Every cue. Score, source, foley, ambience.
Declassify
Music supervision and sound design in the same document as the script. Each score cue, source music drop, needle drop, foley pass, ambient bed, and sfx hit is a graph node — linked to the scenes, motifs, and characters it serves. For licensed music: master owner, publisher, sync fee, master fee, license term, territory, and media scope all tracked in one place. Statuses run from placeholder through temp, requested, cleared, and recorded. Mood pass cosine-matches scene tone to motif centroids and suggests placeholder cues automatically. Music supervisors work in spreadsheets. Sound departments work in DAWs cut off from the script. This is neither.
§21
⊕Persistent analyses
Story issues and crew assignments. In the graph, across sessions.
Declassify
Story-logic and voice-drift findings used to vanish on relaunch — in-memory caches with no persistence. They are now first-class .storyIssue nodes, flagged to the scenes and characters they implicate, surviving sessions and mesh-syncing across devices. Regressions surface when a previously-flagged scene is touched by a new revision. Crew assignments — contracts, day rates, per-day overrides — are now graph nodes with edges from crew members, so budget projection and conflict detection read them in a single pass.
Yours alone
And it never leaves your Mac.
Open it on a plane, write in the woods, lock the file when you ship it. iCloud sync is opt-in, encrypted, only between your own devices. We don't see a word of it. We didn't want to.
02 / 06
Four windows. One document.
Same project, four angles.
One app, four modes. Switch in the corner and the script you wrote becomes the storyboard you direct, the strip you schedule, the call sheet you shoot.
EditorLive formatting on the page. What you write is what you ship.
OutlineThree acts, scene density, page count. At a glance.
ScenesCards on a board. Drag, group, search across the whole script.
StatsMinutes per character, scene economy, pace per act.
BreakdownCast, props, costumes, vehicles, FX. All pulled from the page.
StoryboardFrame the script with images, lenses, movement notes.
Shot listLens, angle, movement, duration. Anchored to the scene.
References & ContinuityBuild the visual language. Track every match.
StripboardStrips coloured by INT/EXT and day/night. Drag to schedule.
DOODDay-out-of-days for cast, props and locations.
Cast & CrewActors, agents, deals, departments, contacts.
Budget & ReportsAbove the line, BTL, post, contingency. Live totals.
Call sheetDay, scenes, cast, crew call, sunrise. Writes itself.
Today's shotsShot list filtered to the day. Tick them as you cover them.
Weather & SunSunrise, sunset, golden hour, blue hour. Offline.
Continuity & DailyWraps the day. Feeds tomorrow.
04 / 06
From script to set
The producer's window is the writer's window, turned ninety degrees.
Lucerna keeps the script and the production inside the same document. Cast, props, locations and scene economics flow out of the page automatically. No spreadsheet. No exports. No second tool.
No serverOn-deviceYours to export
The Stripboard
Drag your shoot into shape.
Strips coloured by INT/EXT and day/night. 24 industry-standard breakdown categories. Multi-unit ready.
The Ledger
Budget that lives with the script.
Above the line, BTL, post, contingency. Scenarios side by side. Actuals against estimates, in real time. The Intelligence panel shows variance, top-8 costliest scenes, characters, and locations, and account totals — cross-queryable with narrative and breakdown.
Casting
Actor pipeline, wired to the schedule.
Five-stage considerations pipeline: idea, contacted, auditioned, shortlisted, signed. Actor library lives alongside scenes and locations. The schedule flags cross-unit double-booking automatically.
Colored Pages
Every revision round. Every department impact.
Lock a colored revision and it links to every scene, character, location, and prop it touched. The Revisions panel breaks impact down by department — Story, Casting, Locations, Props, AD & Scheduling. Print a Revision Memo PDF with a colored banner for distribution.
Sides & Day Pack
Every actor's pages. One tap, no server.
SidesView generates per-character sides for any shoot day and a Day Pack PDF covering every principal — ordered by scene count, heaviest first — stamped with the current revision color in the same typography as the lockable screenplay. The 1st AD's morning document routine collapses into a single button.
Call sheet, auto-assembled
Scenes scheduled for the day, cast pulled from the breakdown, sun and weather computed locally.
Today's shots, ready to tick
Filtered shot list for the current shoot day. Tick each frame as it gets covered.
Scouting, pending to permitted
Each location has an address, photos, contacts, pros and cons, and a permit status.
Every cue, in the document
Score cues, source drops, foley, ambience, sfx — each a graph node linked to its scene. Rights and clearance status tracked alongside.
Slate, status, timecode. Readable across the room.
Master/detail layout for the script supervisor. Shoot days on the left, full take table on the right — OK, Hold, NG, pending — as colored icons. Mesh-syncs across every device on set.
Every costume. By character, by scene.
WardrobeView shows two modes: By Character groups items per actor with continuity detail; By Scene shows everything worn in each scene. Costume designer's dashboard, no extra setup.
PDF and CSV. Editorial gets what it needs.
Camera report PDF and OK takes CSV export from the take log in one tap — bin-ready for Avid, DaVinci Resolve, and Premiere, with no file massaging.
05 / 06
Pricing. Pay once. It's yours.
Two prices. You pay once. You own it. If you were expecting a monthly/annual toggle, wrong tab.
The subscription model is a business decision dressed up as a service. You pay forever. They keep the files. You stop paying, the files get complicated. We built Lucerna because we were tired of that deal. You buy it once. It lives on your machine. If we stop existing tomorrow, your script is still there.
Tier 01
Lucerna · Screenplay Only
Write the script. Own every word. No second screen, no cloud login, no monthly invoice in your inbox.
€79
one time
- ✓Fountain editor with live formatting and pagination
- ✓Story branches, bookmarks, full draft history
- ✓Outline, scene list, narrative statistics
- ✓Characters, locations and objects, tracked automatically
- ✓PDF export, script import, iCloud sync
- ✓Unlimited projects on this Mac
macOS 26 Sequoia · Apple silicon
Tier 02
Full Suite
Lucerna · Screenplay & Production
The full suite. From the first sentence to the last shooting day.
€200
one time
- ✓Everything in Screenplay, plus the full production suite
- ✓Automatic scene breakdown: props, wardrobe, vehicles, FX, cast
- ✓Stripboard scheduling with drag-and-drop shoot days
- ✓Budget builder with line items, fringes, cost tracking
- ✓Call sheets, shot lists, continuity, daily reports
- ✓Cast pipeline: casting, contracts, availability, contacts
- ✓Crew management, department rosters, deal memos
- ✓Locations scouting with photos, permits, logistics
macOS 26 Sequoia · Apple silicon
Already on Screenplay Only? Upgrade to Screenplay & Production for €121. That is €200 minus €79. We don't charge upgrade fees that aren't math. Coupon in your App Store receipt.
06 / 06
Technical
Built for the hardware
screenwriters already own.
Native Swift, Apple silicon, no Electron. Lucerna runs cool on a base MacBook Air and stays out of the way of the only thing that matters: the page.
Platform
macOS 26 Sequoia. Apple silicon (M1 or newer).
Memory
8 GB minimum. 16 GB recommended.
Storage
~280 MB app. About 5 MB per feature-length script.
Languages
English · Italiano · Français · Deutsch · Español
Project file
.lucerna. A single bundle on your Mac.
Imports
industry-standard script formats · Fountain · plain text
Exports
PDF with industry pagination, real title page · Fountain
Production formats
industry-standard production file formats. Import and export without conversion.
Breakdown
24 industry-standard categories. Multi-unit ready.
Casting
5-stage considerations pipeline. Actor library. Cross-unit double-booking detection.
Budget intelligence
Variance summary. Top-8 costliest scenes, characters, locations. Account roll-up. Semantic line-item search.
Reports
Camera report PDF (tinted revision-color cover, per-scene/per-shot tables). OK takes CSV: UTF-8 BOM, CRLF, RFC 4180 — bin-ready for Avid, DaVinci Resolve, and Premiere. Daily production report promoted to first-class graph node.
Sync
iCloud. Encrypted end to end. Only between your own devices.
Drafts
Every revision kept. Bookmark, compare, restore. Automatic.
Privacy
Yours alone. No account. No tracking. No telemetry.
Distribution
Mac App Store. Apple handles billing and refunds.
Open formats
Fountain · industry-standard PDF · Markdown notes
·
By Luminos Film
We make films and software. Lucerna is the tool we kept not finding. So we stopped looking and built it.
·
TestFlight invite
Apply for
the beta.
Lucerna is in private beta, invite only. Fill out the form, tell us what you write and what you produce. Access opens in batches. We won't contact you for anything other than the invite.
Everyone selected who makes it through the beta gets Lucerna free, forever. This version. No asterisks.
No spam. No drip campaign. No "data partners". No remarketing pixel. Hosted in the EU.
Questions, before you ask.
- A native macOS app for screenwriters and the productions they ship. Live Fountain editor. Breakdown, stripboard, shot list, call sheet, budget, scouting. One app, one purchase, runs on your machine. No account required to open your own script.
- Yes. One price, one time. €79 for Screenplay Only, €200 for the full production suite. You buy it, you own it, nobody charges you again next month. We know that feels disorienting. You have been trained to expect a subscription. The entire industry spent a decade teaching you that software is a service you rent rather than a thing you own. That arrangement is good for shareholders. It is not good for you. We are on the other side of that argument. Upgrade from Screenplay to the full suite later and you pay the difference: €121. That is €200 minus €79. No upgrade fee on top of the math.
- On your Mac. Not in our cloud. Not on a server farm you have never heard of in a country you did not choose. Your file, your disk, your machine. iCloud sync is opt-in and runs between your own devices, encrypted. We have no server. We have no access. We literally cannot read your script. Some people ask if that is actually secure. That question assumes centralised storage with a company you have to trust indefinitely is the safe default. It is not.
- Yes. Scripts in industry-standard and Fountain formats come in directly, and Lucerna exports to industry-standard PDF with proper pagination and a real title page. Your scripts stay portable. Nobody is locking you in.
- Co-writers can collaborate live through encrypted iCloud sync. Only the people you invite see the project. Producers, script supervisors and ADs can be given read-only access to specific scenes or breakdowns, so nobody has to flatten everything to a PDF.
- No. Every draft, every revision, kept automatically. Bookmark the version you love, branch a what-if, compare two drafts side by side, restore the ending you deleted three weeks ago. All without leaving the editor. Losing weeks of work to one careless save is not a technical limitation. It is a product decision. Most writing apps made it because version history is harder to build than a single save button. We built it anyway.
- macOS 26 Sequoia or newer on any Apple silicon Mac (M1 and up). Native Mac app: quick to launch, kind to your battery, silent on a base MacBook Air.
- We use Lucerna every day at Luminos to write our own films. That said, it's a TestFlight beta. We ship updates weekly and we expect feedback. That's why we're picky about invitations.
- Drop your email in the form above. Invitations go out in weekly batches. Working screenwriters and production companies first, but solo writers and students are welcome. Just tell us a sentence about what you're working on.