Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
Plotline Screenwriting Tool
- Fit 1,000+ index cards with the overlapping feature.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
15 ratings · Top 15%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Plotline Screenwriting Tool: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Introduce real-time collaboration for multiple users.
Assumption to check: Limited collaboration features for multiple writers
Validate with people who use this workflow before building.
Hypothesis 2
Implement auto-saving of scripts at regular intervals.
Assumption to check: No auto-save feature
Validate with people who use this workflow before building.
Hypothesis 3
Add rich text formatting and style options.
Assumption to check: Lack of advanced formatting options
Validate with people who use this workflow before building.
Hypothesis 4
Provide cloud sync to save scripts across devices.
Assumption to check: No cloud backup
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
- Fit 1,000+ index cards with the overlapping feature. - Complete flexibility on movement. - Provide writing patterns for better organisation. - Connect to IMDb on demand. - Set up personal writing reminders. With the capacity of 1,000 index cards, we provide you with total freedom to arrange your masterpiece and see possibilities. Long press before moving to prevent accidental misplacement and single tapping for further content adjustment. You can easily use our designed writing models to visualise your ideas and categorise them. We support your constant needs on searching for IMDb—without the hassle of jumping back and forth between apps, now you can simply type in names you desire and search in-app. By clicking on the result links, we directly take you to the IMDb page/app of the selected title. Create your reminders. No matter it’s a weekly writing schedule or a shoutout to yourself, encourage the future you to keep going! Feel free to send any comments, questions or suggestions to the developer in the Feedback section. Thank you for your support!
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
react-native-gesture-handler
react-native-reanimated
BUILD KIT DIFFICULTY
Intermediate
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
