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
QR Scanner Pro *
The Ultimate QR code and Barcode Reader: Effortless QR Code and Barcode Scanning and Creation
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.1
1,531 ratings · Top 30%
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 included16 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 QR Scanner Pro *: map the core Utilities workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
The Ultimate QR code and Barcode Reader: Effortless QR Code and Barcode Scanning and Creation Download now for FREE and experience the best in QR and Barcode code technology! FEATURES • QR Code Scanner: Instantly scan any QR code or barcode with ease. • Create Your Own QR Codes: Generate custom QR codes for personal or professional use. • Barcode Scanner: Efficiently scan barcodes on coupons, food labels, and more. • Share QR Codes: Easily share QR codes with friends and family. • Auto Scan: Quick and automatic scanning for maximum convenience. • Archive and Save: Keep a history of all your scanned and created QR codes for future reference. Download today and make QR code scanning and creation a breeze! Get the full version by subscribing : * Weekly subscription program: - Unlimited QR and Barcode scans - All QR templates unlocked - Flexible scanning options and formats Terms and Conditions: https://qr-fun.com/terms Privacy Policy: https://qr-fun.com/privacy EULA: https://qr-fun.com/eula/
Written user reviews are not shown here. Check current App Store reviews >
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
Enhance scanning capabilities to include various QR formats and links.
Assumption to check: Limited scanning options for different QR code types
Validate with people who use this workflow before building.
Hypothesis 2
Add a feature to create and customize QR codes.
Assumption to check: No option to generate QR codes
Validate with people who use this workflow before building.
Hypothesis 3
Implement advanced filtering and sorting options for scan history.
Assumption to check: Basic history management
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to share scanned content directly through social media or messaging apps.
Assumption to check: Lack of sharing options for scan results
Validate with people who use this workflow before building.
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.
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BUILD KIT DIFFICULTY
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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.
