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 Helper: Scan & Merge
Keep documents and photos organized with PDF Helper
$0.99
PRICE
$0.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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.
First kit free with a verified email
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Keep documents and photos organized with PDF Helper. Capture a document or import files from your device, create PDFs from photos, and combine PDFs in your preferred order. SCAN AND PHOTO PDF Automatically detect document corners or adjust each corner yourself. Choose color, grayscale or document enhancement. Keep the original photo size without margins, or select A4, Letter or custom dimensions. MERGE AND EDIT PDFs Merge files in your chosen order. Preview pages, reorder, rotate or delete individual pages, then save your edited PDF as a new copy. PDF TOOLS Compress PDFs, split or extract selected pages, convert PDFs and images, and add a signature image, watermark or page numbers. Signature images are not certificate-based digital signatures. PHOTO TOOLS Combine several photos into one image or split a photo into a grid. Choose the output ratio, rows, columns, photo order, spacing and fit. BACKGROUND REMOVAL Remove a photo background on your device and export a transparent PNG. Review and refine edges, especially on complex backgrounds. ON-DEVICE PROCESSING Documents and photos are processed on your device and are not uploaded to our servers. No account or direct cloud connection is required. Export files to your device or share them with other apps. Available in Korean, English, Simplified Chinese and Japanese. App and website document libraries do not automatically sync. Export important files before uninstalling the app.
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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.
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
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
