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 & Shopping
the most simple & easy barcode and qr code scanner - download now for free!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.3
4,597 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 included17 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 Barcode Scanner & Shopping: map the core Shopping 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 advanced scanning algorithms for better accuracy.
Assumption to check: Inconsistent barcode scanning performance
Validate with people who use this workflow before building.
Hypothesis 2
Enhance product detail pages with more comprehensive data.
Assumption to check: Limited product information on scanned items
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the subscription model and provide clearer descriptions.
Assumption to check: In-app purchase confusion
Validate with people who use this workflow before building.
Hypothesis 4
Optimize backend queries to improve search efficiency.
Assumption to check: Slow search results
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
the most simple & easy barcode and qr code scanner - download now for free! explore your world by scanning any qr code or barcode to get additional information including results from popular online marketplaces such as amazon, ebay, walmart, target, bestbuy, google, costco, kroger, alibaba etc. - 100% free! also create and share qr codes to open urls, connect to wifi hotspots, add events, read v-cards, share geolocation etc. you can even manage product inventory for your business. feature : • scan, create, share and manage qr codes & barcodes. • auto-detect scanning. simply point & hold! • supported code formats : qr code, barcode, ean 13, ean 8, upc-a, upc-e, code 128, data matrix, pdf417, aztec, interleaved 2 of 5, code 39, code 93, codabar, databar, etc. • scan any product code & get price and other detail information about the product. • compare product price in best marketplaces : amazon, ebay, walmart, target, bestbuy, google shopping, costco, kroger, alibaba. • batch scan mode. you can scan unlimited codes without preview right now & check them out later one by one when you are free! make your shopping convenient, relaxing & stress free. • create any types of qr codes : text, url, phone number, v-card, sms, email, wi-fi hotspot, calendar, geolocation etc. • search your product result through different search engine : google, yahoo, bing, duck duck go, baidu, brave search, yandex, naver. • easily manage unlimited scan history, export your history as csv file and share anywhere you want. • instantly send your codes to any configurable web server. • use barcode scanner for product inventory and quality assurance in your small business. • save & share your codes.
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
Axios
React Navigation
Supabase
Zustand
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.
