Free Screenwriting Software: The Best Free Apps, Honestly Compared

The best free screenwriting software depends on what you can live with: Trelby and KIT Scenarist are free on the desktop with no watermark, Fountain in any text editor costs nothing anywhere, WriterDuet, Arc Studio and Highland have free tiers with limits, and Zen Writer is free on iPhone, iPad, Mac and Android with one screenplay and watermarked exports until you go Pro.

Updated 2026-09-22 · About 8 sections · 5 answered questions

The best free screenwriting software: the short answer

Genuinely free, no strings: Trelby on Windows and Linux, KIT Scenarist on Windows, Mac and Linux, and Fountain syntax in any text editor on any device. Free tiers that are enough to write a whole script but restrict something: Zen Writer on iPhone, iPad, Mac and Android (one screenplay, watermarked exports), Highland on Mac and iOS (watermarked output), WriterDuet and Arc Studio in the browser (limited number of scripts). Trials that end: Celtx. Free demos: Fade In, usable with a watermark.

Every one of them formats a screenplay correctly, and most read and write the format explained in the FDX guides. The question is not whether free software can produce a professional script. It can. The question is what each free tier takes away, and whether that is something you need.

What "free" usually hides

Free screenwriting software is free for one of five reasons. Knowing which one tells you where the limit is:

Watermarked exports. The editor is complete; the PDF carries a stamp. Fine for drafting and for your own reading, disqualifying for anything you send to a reader. The fix is a paid unlock or converting the file elsewhere.
Script limits. One screenplay, or three projects, or one active document. Enough for the script you are writing now; the limit bites when you start the next one before the first is done.
Cloud-only files. The app is free because the account is the product. Your script lives on their server, opens only with a login, and is available offline only if you prepared for it. Read the export options before you write page one.
Time-limited trials. Everything works for a fortnight, then nothing does. Fine for evaluating; never start a draft in one.
Volunteer or abandoned software. Open-source tools are free because nobody is being paid. That is honourable and it also means slow updates, dated interfaces and occasional breakage on a new operating system.

None of these is a trick, provided the vendor says so up front. The trick is when a "free" app hides the watermark until the export button, or restricts FDX export to the paid tier without saying so. Check the export list first, and check pricing on the day, because tiers change.

Free screenwriting software for Windows, Mac and Linux

Trelby (Windows, Linux)

Free and open source with no tiers, no watermark and no account. It formats as you type, imports and exports FDX and Fountain, and produces standard PDFs. Development is slow and the interface looks its age, but the pages it produces are correct, and on Linux it is one of the few native choices.

KIT Scenarist (Windows, Mac, Linux)

A free desktop suite with research, index cards, an editor and statistics, with mobile versions and paid cloud features on top of a free core. Imports FDX and Fountain. The interface is dense, but the free core is a complete screenwriting tool.

Highland (Mac, iPad, iPhone)

From the makers of Fountain. The free version is a full editor with watermarked output; the paid tier removes the watermark and adds features. Because the file is plain-text Fountain, nothing you write is locked in even if you never pay.

Fade In demo (Mac, Windows, Linux)

Fade In is a one-time purchase, but its free demo is usable without a time limit, with a watermark on output. A fair way to write a whole draft before deciding whether to buy.

Fountain in any text editor (everywhere)

Fountain is a plain-text syntax: a scene heading is a line starting INT. or EXT., a character cue is a line in caps, dialogue is the line beneath it. Any text editor on any operating system can write it, offline, free, forever. You give up seeing the formatting while you type and get a file that opens anywhere and converts to FDX or PDF in one step. What the Fountain screenplay format is covers the syntax; how to convert Fountain to FDX covers getting it into Final Draft.

Free screenwriting software in the browser

WriterDuet

Cloud-first, built for real-time co-writing, with FDX in and out and an offline mode. The free tier is limited in the number of scripts; paid tiers lift that. If you write with a partner, the free tier is worth testing on a real project. Check what it lets you export before you rely on it.

Arc Studio

Cloud-first with desktop and iOS apps, strong at outlining with a beat board beside the script. FDX supported. Free tier limited by script count. Good for a writer who outlines heavily and is usually online.

Celtx

Subscription pre-production suite with a script editor: scheduling, breakdowns, shot lists. There is a trial, not a free tier. Evaluate in it; do not start a draft in it.

The free online screenplay editor on this site

The free online screenplay editor formats as you type in any browser with no login, for the days you cannot install anything: a work laptop, a library computer, a Chromebook without the Play Store. It is a place to get pages down and export them, not a home for a long project that needs offline files.

Free screenwriting apps for phone and tablet

Mobile is where "free" gets thinnest, because the big desktop brands either charge a separate subscription for their phone app or skip the platform entirely. Two facts frame the field: Final Draft's mobile app is a paid subscription and iOS only, and Android has fewer native options than iPhone. The Android screenwriting apps guide covers that platform in detail.

Zen Writer (iPhone, iPad, Mac, Android)

Free to download, no account, nothing uploaded, works fully offline. It formats as you type, imports .fdx, .fountain, .txt and text-based PDF screenplays, and exports PDF, FDX, Fountain and plain text, with a scene navigator, an automatic character list, search and script statistics. Here is the honest shape of the free tier: one screenplay, and exports carry a watermark. That is enough to write a complete draft, read it on every device you own and decide whether the app suits you. Pro removes the one-screenplay limit and the watermark and adds version history. Prices are on the app stores, not in this article.

Highland (iPhone, iPad)

The same free-with-watermark model as on the Mac, and the same durable Fountain file underneath.

WriterDuet and KIT Scenarist (mobile)

Both reach phones, WriterDuet through the browser and a mobile app, KIT Scenarist through mobile versions of its free core. Both are worth a look if you already use them on the desktop; check the current app listings for what the mobile free tier includes.

Free screenwriting software compared

Software	Platforms	What free actually gives you	The catch	FDX in / out
Trelby	Windows, Linux	Everything	Dated interface, slow development	Yes / yes
KIT Scenarist	Windows, Mac, Linux, mobile	Full editor and development suite	Cloud features are paid; dense UI	Yes / yes
Fountain in a text editor	Any	Everything, forever	No on-screen formatting; convert to export	Via converter
Zen Writer	iPhone, iPad, Mac, Android	Full editor, offline, no account	One screenplay, watermarked exports until Pro	Yes / yes
Highland	Mac, iPad, iPhone	Full editor	Watermarked output until paid	Yes / yes
WriterDuet	Browser, apps	Collaboration, history	Script limit; cloud first	Yes / yes
Arc Studio	Browser, desktop, iOS	Editor and beat board	Script limit; cloud first	Yes / yes
Fade In demo	Mac, Windows, Linux	Full editor	Watermark until purchased	Yes / yes
Celtx	Browser	Trial only	Ends; subscription after	Yes / yes

Tiers change what they restrict from year to year. Treat the table as the shape of each offer and confirm the current limits on the vendor's site.

Free browser tools that need no software at all

A lot of what sends people searching for free screenwriting software is a single file job, and those need no install. The tools on this site run in the browser with no login and keep nothing:

Paste messy plain text into the plain text screenplay formatter and get Fountain, FDX or a formatted PDF back.
Turn an FDX into a clean, unwatermarked PDF with the FDX to PDF converter; the FDX to PDF guide explains the pagination it uses.
Open any FDX, Fountain or PDF script to read it in the free FDX viewer.
Convert between Fountain and FDX, recover an editable script from a text-based PDF, validate sluglines, count character lines, and estimate runtime.

Combined with a free app, they close the usual gap: write in whatever free tool suits your device, then use the converters for the one export the free tier will not give you. If you want one free app across every device you own, Zen Writer is on all four platforms, and the wider paid field is in the Final Draft alternatives roundup.

Mistakes writers make with free screenwriting software

Sending a watermarked PDF. A reader sees the stamp before your first line. Pay for the unlock or run the FDX through a free converter first.
Starting a draft in a trial. When the trial ends, so does access. Trials are for evaluating.
Using a word processor with Courier. Margins drift under editing and the file never round-trips into FDX. Fountain in a text editor is just as free and converts perfectly.
Keeping the only copy inside a free cloud account. Export FDX or Fountain to a disk you control at the end of every session, whichever tool you write in.
Paying for features you will never open. If a free tier gives you formatting, FDX and a clean PDF, the paid tier has to earn its money with something you actually use, usually collaboration or version history.

Frequently asked questions

Is there completely free screenwriting software with no watermark?

Yes. Trelby on Windows and Linux and KIT Scenarist on Windows, Mac and Linux export unwatermarked PDFs at no cost, and Fountain written in any text editor converts to a clean PDF or FDX through a free converter. Most other free tiers watermark exports or limit the number of scripts.

Is Zen Writer really free?

Yes, with a clearly stated free tier: one screenplay, full editing, offline, no account, and exports that carry a watermark. Pro removes the one-screenplay limit and the watermark and adds version history. You can write and read a complete draft without paying; check the app store for current Pro pricing.

Is there a free version of Final Draft?

No. Final Draft is a paid desktop licence with a time-limited trial, and its mobile app is a paid subscription. The free tools that can open and edit its FDX files include Trelby, KIT Scenarist, Zen Writer's free tier and the free tiers of WriterDuet, Arc Studio and Highland.

Can I write a professional screenplay with free software?

Yes. Readers see a PDF, and a PDF at US Letter, 12-point Courier and a 1.5-inch left margin from a free app is indistinguishable from one exported by Final Draft. The only thing that gives away free software is a watermark, so remove it before you send anything.

What is the best free screenwriting app for phones?

Zen Writer is free on iPhone, iPad and Android with automatic formatting, offline files and FDX import and export, limited to one screenplay with watermarked exports until Pro. Highland has a free version on iPhone and iPad. See how to write a screenplay on your phone for the workflow.

Ready to turn this idea into a screenplay?

Zen Writer's free tier gives you a full offline screenplay editor with FDX and Fountain import on iPhone, iPad, Mac and Android; Pro lifts the one-script limit and the export watermark.

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