WriterDuet

WriterDuet is screenwriting software developed by WriterDuet Inc. for writing, outlining, formatting and editing screenplays and other scripted media. It runs on the web and on Windows, Mac OS, Linux, iOS and Android, is written in Javascript, and uses Firebase to synchronize edits so multiple people can work on the same script simultaneously from different devices. The application applies industry-standard formatting automatically to standards recommended by AMPAS and also supports theater, novel and video game formats. It is available in English, Chinese, Spanish, French, Portuguese, Hebrew and other languages.

Core features include real-time co-writing with comments and chat, automatic and infinite revision tracking through a "Timeline" history view with custom revision tracking, an outliner, and import/export compatibility with Final Draft (.fdx), Celtx, Fountain, PDF and Word files. Multimedia such as YouTube, SoundCloud, images and hyperlinks can be embedded directly in a script. A desktop app, offered as part of a paid subscription, allows online and offline work without a browser and supports Mac (Intel and Apple silicon), Windows and 32- and 64-bit Linux. Cloud saving occurs as the writer types, with offline work syncing when a connection returns. The Android product is distributed as a Progressive Web App so that updates reach users without manual app updates.

Adjacent products from the same founder include ReadThrough.com, which produces audio performances of scripts using computer voices or volunteer voice actors, and its sister site ReadCues.com for actors learning lines; the founder has said he intends to pull ReadThrough features into WriterDuet. WriterSolo/FreeScreenwriting.com provides an offline, pay-what-you-want alternative.

Founding story

Founder Guy Goldstein has said the product originated from the need for collaboration in screenwriting and film production: emailing scripts back and forth was inconvenient, and existing tools' collaboration features did not show changes immediately and risked overwriting work. WriterDuet was built from the ground up for seamless real-time collaboration so that concurrent edits, even on the same line, merge without conflict. Goldstein had previously created ReadThrough.com, an earlier product for screenwriters and actors.

Business model

WriterDuet sells its screenwriting application directly to writers on a freemium subscription basis. A free tier allows up to three scripts with no page or time limit and no restriction on import/export, while a paid Pro/Plus subscription unlocks unlimited scripts, real-time collaboration, the online-offline desktop app, edit-by-edit revision history, and production, customization and analysis toolsets. Pro was listed at $11.99 per month or $89 per year, with a half-price discount for students and teachers; the founder earlier cited a $69 Pro price positioned against Final Draft's $249.99. Updates to the paid tier are provided at no additional charge, and the Google Play listing offers digital purchases in-app.

Recurring subscription software revenue from individual writers, with a free entry tier (three scripts) converting to paid Pro/Plus subscriptions billed monthly or annually, plus digital purchases through the mobile app.

Traction

Marketing materials claim use by over one million screenwriters; in an earlier founder interview the user base was described as in the tens of thousands. The Android app has more than 100,000 downloads and a 3.7-star rating from about 1,140 reviews. The company is listed with 12 employees as of February 2024 and has been covered by TheWrap, The New York Times and No Film School.

Latest developments

The Android app listing was updated in September 2026 and the desktop-app knowledgebase article in January 2026, with the app now delivered as a Progressive Web App. Marketing materials state the product is used by over one million screenwriters. The free tier is documented as allowing three concurrent projects.