Comparison

WriterDuet vs ScriptBuilder

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

WriterDuet

This intuitive screenwriting software offers real-time collaboration and powerful features for writers on the go. Its user-friendly interface allows for instant writing, with robust tools for outlining, reporting, and revision management. Secure and industry-standard, it ensures your work is always saved and accessible.

Highlights
  • Real-time collaboration
  • Offline mode
  • Card outliner
  • Revision drafts
  • Automatic statistics
  • Export from any point
Features
Read full description

A simple and intuitive interface lets you dive into writing instantly on the go or as you lay in bed and stare at your phone screen (check out dark editor if that's you). While we've focused on ease of use for mobile, we also haven't restricted you from taking advantage of all of the power that WriterDuet has to offer on other platforms. So go wild! Industry-standard, secure, and intuitive screenwriting software. Features: • Real-time collaboration between users and devices • Smart line types and one-touch icons • Auto-save • Card outliner • Export from any point in history • Offline mode • Filter by line type or with custom tags • Scene & Location, Character Reports • Automatic statistics • Revision Drafts and Auto-Snapshots Testimonials: "WriterDuet is the most intuitive, most user-friendly scriptwriting software I’ve ever used.” – Ed Solomon (Men in Black, Bill & Ted’s Excellent Adventure) “WriterDuet helped me escape Final Draft. Being web-based gives me the flexibility to write anywhere on any system. And I never have to worry about crashes and lost hours of work ever again. ... I recommend it to every other screenwriter I meet.” – Christopher Ford (SpiderMan: Homecoming, Robot & Frank) “The app saves my whole thought process for me. On top of that, these guys are iterating the app so fast, they're running circles around the industry leader. WriterDuet definitely feels like the future.” – Andy Bobrow (Community, Malcolm in the Middle, Last Man On Earth) "WriterDuet combines instinct and user-friendliness for a unique and exhilarating way for writers to collaborate, whether in real-time or in non-synchronized work. It has features that are vital for teamwork in scriptwriting. It's a meticulously-created gem, and a must-have for collaborations" - Jim Uhls (Fight Club) “Do yourself a favor and use WriterDuet.” – Alisha Brophy & Scott Miles (Nicholl Fellowship 2014 winners, White Girl Problems)

About

ScriptBuilder

Capture and develop screenplay ideas on the go. This app guides you through clarifying your movie concept, structuring your story arc with act builders, and fleshing out characters and scenes with targeted questions. Prepare to write compelling stories with a solid foundation.

Highlights
  • Idea clarification questions
  • Story arc structure (Act 1, 2, 3)
  • Character development prompts
  • Scene building guidance
  • On-the-go idea capture
Features
Read full description

Welcome to ScriptBuilder! ScriptBuilder was made to capture and build screenplay ideas on the go. Before you face the dreaded blank page, build up your screenplay idea with ScriptBuilder! Features: • The Idea section helps you clarify your movie idea by answering specific questions, getting to the heart of your story • Structure your story arc with Act 1, Act 2, and Act 3 builders. All three act sections contain Act Beat questions to facilitate new ideas and notes which will prepare you when you're ready to build scenes • The "Character Builder" feature prompts you to answer questions about your characters to help you get to know your characters better and to discover their arcs. Getting to know your characters will make writing your scenes with these characters smoother. (Access through in-app purchase) • The "Scene Builder" feature provides useful questions that when answered help bring clarity to what the scene does to move your story and characters forward. (Access through in-app purchase) Unlimited Access: All Access (1 Month) $5.99 All Access (1 Year) $49.99 -------------------------------- I originally built this app because I found myself coming up with ideas for screenplays but didn't have a dedicated place to capture them. I also wanted a tool that would help me flesh out the story, characters, and scenes before I sat down in front of my computer to write. I want to continue to iterate on ScriptBuilder with new features to make it even better. If you have any feature requests, questions or comments, please go to the support url and send me an email :) I hope ScriptBuilder helps you along your path in creating compelling stories in both feature films and television. If it does help, please share ScriptBuilder with your family and friends. Thank you! -------------------------------- Privacy Policy: https://www.scriptbuilderapp.com/_files/ugd/b622d0_f5722cd213394590bbd181559a0af540.pdf Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

WriterDuet4 screens
ScriptBuilder4 screens

Verdict

The call

The clearest difference is rating: ScriptBuilder at 4.6 against WriterDuet's 3.1. ScriptBuilder also leads on update cadence (every 2 weeks vs every 2 months). WriterDuet's advantage is in-app purchases (none vs 6) and ratings volume (72 vs 7). On price, review sentiment, ads and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ScriptBuilder sells 6 in-app purchases, starting at $5.99 per month. WriterDuet asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ScriptBuilder holds the better App Store score, 4.6 against 3.1. That said, the two scores are not equally well evidenced: WriterDuet has 72 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 37% of WriterDuet's written reviews are positive against 36% of ScriptBuilder's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

WriterDuet ships an update every 2 months, ScriptBuilder every 2 weeks. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
WriterDuet versus ScriptBuilder: the parameters behind the verdict, then further details
ParameterWriterDuetScriptBuilder
PriceFreeFree
Rating3.1 (72 ratings)4.6 (7 ratings) — better
Positive reviews37.4% of reviews — better35.7% of reviews
Number of ratings72 — better7
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size249 MB23 MB
Age rating12+4+
DeveloperWriterDuet Inc.patrick ridd

Customer experience

WriterDuet

All ratings72 ratings
Positive48.6%
Neutral11.1%
Negative40.3%
Written reviews230 reviews
Positive37.4%
Neutral9.6%
Negative53.0%

ScriptBuilder

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews56 reviews
Positive35.7%
Neutral23.2%
Negative41.1%

Bugs and requests

WriterDuet

Reported bugs

5 issues
  • Freezing on login screen
  • Disappearing text and formatting errors
  • Inability to access or export projects
  • Compatibility issues with newer devices
  • Inconsistent behavior across platforms

Requested features

5 requests
  • Offline mode support
  • Improved mobile app optimization
  • More customization options
  • Better integration with other writing tools
  • Expanded template and formatting options

ScriptBuilder

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

WriterDuet

No in-app purchases

6 purchases

ScriptBuilder

Subscriptions2
  • All Access (1 Month)7 Days trial$5.991 Month
  • All Access (1 year)7 Days trial$49.991 Year
One-time4
  • Character Builder$0.99
  • Scene Builder$0.99
  • No Ads$1.99
Show 1 more
  • All Access (Lifetime)$69.99

Questions

Is WriterDuet free?
WriterDuet is free to download, with no in-app purchases.
Is ScriptBuilder free?
ScriptBuilder is free to download, with in-app purchases available.
Which has better reviews, WriterDuet or ScriptBuilder?
ScriptBuilder is rated higher. WriterDuet averages 3.1 out of 5 from 72 ratings, while ScriptBuilder averages 4.6 from 7 ratings.
Do WriterDuet or ScriptBuilder have ads?
Neither WriterDuet nor ScriptBuilder shows ads.
Which is updated more often, WriterDuet or ScriptBuilder?
WriterDuet ships an update every 2 months, and ScriptBuilder every 2 weeks. Most recently, WriterDuet was updated on October 9, 2026 and ScriptBuilder on October 7, 2026.

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