Comparison

Final Script AI vs Big Lemon

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

Head to head
About

Final Script AI

Features
Read full description

Final Script AI is a professional screenwriting app for iPhone — industry-standard formatting, a beat board, structure templates, production revisions, and an AI writing room powered by Claude. WRITE LIKE A PRO • Auto-formatting editor with smart return, type cycling, and smart-type autocomplete • Scene headings, action, character, parenthetical, dialogue, transitions, dual dialogue • Live page count and runtime estimate • Beat board with index cards in act columns • Structure templates: Three-Act, Save the Cat, Hero's Journey • Outline view with beats and scene list AI WRITING ROOM (BYOK) Bring your own Anthropic API key — stored securely in your Keychain, never on a server. Powered by Claude: • Continue Scene — draft the next lines in your established voice • Punch Up Dialogue / Tighten Action — craft-level rewrites • Coverage Notes — an honest reader's report with logline, strengths, concerns, and next steps • Generate Logline / Synopsis — pitch material from your script • Brainstorm Beats — unstuck ideas with real range • Check Character Voice — flags off-voice lines using the character bible • Suggest Names / Analyze Tone PRO EXPORT • Import and export Fountain (.fountain) • Export Final Draft (.fdx) — Pro • Export print-ready PDF (US-Letter Courier) — Pro PRODUCTION READY • Production revisions with WGA color order (blue, pink, yellow, green, goldenrod, buff) • Locked pages and revision drafts • Character bible with voice notes PRICING Free: unlimited projects, full editor, beat board, Fountain I/O, 10 AI assists per month. Pro ($24.99/year): unlimited AI, Final Draft + PDF export, production revisions, character bible. Your screenplays never leave your device. Your API key is stored only in the iOS Keychain. TERMS & PRIVACY Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mvalasek77-droid.github.io/finalscript-ai-privacy/

About

Big Lemon

Read full description

Big Lemon Writer is a calm, organized workspace for novelists and fiction writers. Plan your story, build characters and plot cards, draft chapter by chapter, and get focused AI feedback without losing control of your voice. WRITE WITH FOCUS • Create and organize multiple novels, volumes, and chapters • Use headings, bold, italics, lists, Markdown export, search and replace, and Web or Manuscript paragraph styles • Track chapter word counts, daily goals, monthly goals, and writing time • Set a focus timer and play audio you import from your device KEEP THE WHOLE STORY IN VIEW • Build text outlines and visual mind maps • Manage character profiles and custom fields • Turn plot points into story cards you can arrange beside the chapter • Search earlier plot details with keywords or AI-assisted story search GET USEFUL AI FEEDBACK • Review a chapter for hook, character, pacing, style, and revision priorities • Brainstorm, continue, polish, proofread, or work through a block • Prepare for publishing with unofficial, platform-specific guidance based on public information • See your remaining managed AI requests inside the app YOUR WORK, ACROSS DEVICES • Save and sync your writing through your Big Lemon account • Export your work and delete your account from within the app • Big Lemon does not sell private drafts or use them for targeted advertising New accounts receive 3 days of full access without entering payment information. After the account trial ends, an active monthly or annual Big Lemon Pro subscription is required to continue using the app. Each subscription includes up to 50 managed creative AI requests per day and up to 2 GB of personal cloud storage. Billing starts when you confirm a monthly or annual subscription; there is no additional subscription introductory trial. Plans renew automatically unless canceled at least 24 hours before the end of the current period. Payment is charged to your Apple Account. You can manage or cancel your subscription in App Store account settings. Restore Purchases is available inside the app. AI suggestions can be inaccurate. Big Lemon is a creative assistant; you remain in control of your manuscript. Privacy Policy: https://biglemonwriter.com/privacy Terms of Use: https://biglemonwriter.com/terms

Screenshots

Final Script AI4 screens
Big Lemon4 screens

Verdict

The call

The clearest difference is device support: Big Lemon at 4 against Final Script AI's 2. Big Lemon also leads on iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Final Script AI sells 1 in-app purchase, starting at $24.99 per year and Big Lemon sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences Ā· 4 level
Final Script AI versus Big Lemon: the parameters behind the verdict, then further details
ParameterFinal Script AIBig Lemon
PriceFreeFree
Update frequency—Every 4 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS17.015.0 — better
Further details — not scored
Size2 MB23 MB
Age rating4+12+
DeveloperMike Valasekē”œē”œ 唐

In-app purchases

1 purchases

Final Script AI

Subscriptions1
  • Final Script AI Pro$24.991 Year
2 purchases

Big Lemon

Subscriptions2
  • Big Lemon Pro Monthly7 Days trial$4.991 Month
  • Big Lemon Pro Annual7 Days trial$49.991 Year

Questions

Is Final Script AI free?
Final Script AI is free to download, with in-app purchases available.
Is Big Lemon free?
Big Lemon is free to download, with in-app purchases available.
Do Final Script AI or Big Lemon have ads?
Neither Final Script AI nor Big Lemon shows ads.

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