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
Barcode Scanner & Readerㅤㅤ
Our app is a powerful tool for anyone interested in barcodes and QR codes
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.0
6 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 included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Barcode Scanner & Readerㅤㅤ: map the core Business 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
Implement support for a wider range of barcode formats.
Assumption to check: Limited barcode format support
Validate with people who use this workflow before building.
Hypothesis 2
Add cloud synchronization for users to access their history across devices.
Assumption to check: No cloud sync for scan history
Validate with people who use this workflow before building.
Hypothesis 3
Provide more detailed information about scanned items, such as product descriptions.
Assumption to check: Lack of detailed scan information
Validate with people who use this workflow before building.
Hypothesis 4
Optimize the scanning feature for better performance on older hardware.
Assumption to check: Poor performance on older devices
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
Our app is a powerful tool for anyone interested in barcodes and QR codes. With the free version, users can scan up to two barcodes or QR codes and create QR codes that include text or email content. For those looking for more advanced features, a subscription unlocks unlimited scanning, allowing users to scan as many barcodes and QR codes as they want. Subscribers can also generate a variety of barcode types and access all QR code formats, including Wi-Fi credentials, contact information, and URLs. In addition, the app offers advanced customization options for QR codes, such as changing colors or adding logos and social media icons at the center. Whether for personal use or business purposes, our app provides a complete solution for all your barcode and QR code needs. A subscription is required to unlock all features. You can cancel anytime through your device’s subscription settings. This app includes automatically renewing subscriptions and in-app purchases: Weekly - $4.99 Monthly - $12.99 Annually - $39.99 Lifetime - $59.99 Privacy policy: https://docs.google.com/document/d/1J5gKhlWzLPeGgr0AOToQv6uJLKTv18qZ2cOrQeLF6N4/edit?usp=sharing Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
Zustand
React Navigation
AsyncStorage
expo-camera
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.
