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
PDF Flatten
Turn fillable PDF forms into static, non-editable PDFs fully offline.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included15 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 PDF Flatten: 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
Add features like annotations and editing capabilities.
Assumption to check: Limited functionality compared to full PDF editors
Validate with people who use this workflow before building.
Hypothesis 2
Implement auto-save and cloud syncing.
Assumption to check: Users may lose files if not properly saved
Validate with people who use this workflow before building.
Hypothesis 3
Add a preview feature before finalizing the flattening.
Assumption to check: No preview of flattened PDF before saving
Validate with people who use this workflow before building.
Hypothesis 4
Include guided onboarding to explain features.
Assumption to check: Lack of user tutorials or onboarding
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
Turn fillable PDF forms into static, non-editable PDFs fully offline. PDF Flatten converts interactive PDF forms (AcroForms) into static documents that can no longer be edited. Perfect for official forms, contracts, and secure document submissions. No subscriptions. No accounts. No uploads. Everything is processed directly on your device. Why use PDF Flatten? • Convert fillable PDF forms into static PDFs • Remove interactive fields permanently • Works offline and fully private • No watermark • Fast native performance • Simple and clean interface Perfect for: • Contracts and agreements • Business forms • School documents • Applications and paperwork • Any fillable PDF form How it works: 1. Select a fillable PDF 2. Tap Flatten 3. Save or share your static PDF That is it. Your documents never leave your phone. Simple. Secure. Offline.
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
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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.
