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 - QR Scanner
The Best QR Code Reader & Barcode Scanner Free App in the market.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
42,329 ratings · Top 15%
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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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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 - QR Scanner: 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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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 Best QR Code Reader & Barcode Scanner Free App in the market. QR Code Reader & Barcode Scanner Free can be use as shopping assistant. Feature: - Scan all kinds of QR codes - Scan product barcodes - Save your scans in History - Share codes via SMS, Email, Twitter, and Facebook - Display QR codes and barcodes on screen -Jump directly to WEB ADDRESSES decoded. - Flashlight supported for scanning QR codes or Barcodes at low-light environments. -SHARE your QR CODES through: Email, SOCIAL NETWORKS (Facebook, Twitter, Clipboard, Google Plus), TEXT MESSAGES. QR Code Reader , QR Code Scanner & Barcode Scanner app is developed for fast and accurate to be the fastest QR Reader / Barcode Reader/Barcode Scanner out there. QR Code Reader & Barcode Scanner Free is very essential app for every iOS device who want to know product price and information. Also includes a complete QR Code Generator Create your own QR codes for: Email Addresses, Contacts, SMS Messages, URLs, Phone Numbers, Text Notes, Locations,Calendar Events, and More. SUBSCRIPTION PRICING & TERMS We offer 1auto-renewing subscription option: - Subscriptionm $2.99 USD Monthly with free trial - Payment will be charged to iTunes Account at confirmation of purchase - You will be able to access full feature of the app for the duration of the subscription - Subscription automatically renews for the same price and duration period as the original "1 week", "1 month" & "1 Year" unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period at the cost of the chosen package (weekly, monthly) - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's iTunes Account Settings after purchase - No cancellation of the current subscription is allowed during active subscription period - You may cancel a subscription during its free trial period via the subscription setting through your iTunes account. This must be done 24 hours before the end of the subscription period to avoid being charged. Please visit http://support.apple.com/kb/ht4098 for more information - You may turn off the auto-renewal of your subscription via your iTunes Account Settings. However, you are not able to cancel the current subscription during its active period - Any unused portion of a free-trial period, will be forfeited when the user purchases a subscription Read our full Terms of Service and our Privacy Policy at https://sites.google.com/view/qrreader/privacy-policy https://sites.google.com/view/qrreader/terms
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
Implement a better scanning algorithm and allow manual input for failed scans.
Assumption to check: Scanning accuracy can vary based on lighting and barcode quality.
Validate with people who use this workflow before building.
Hypothesis 2
Integrate more product databases for comprehensive information.
Assumption to check: Limited product details available after scanning.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to save scanned items offline for later access.
Assumption to check: No offline functionality, relying solely on internet connection.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify subscription tiers and provide clear explanations of benefits.
Assumption to check: In-app purchase options can be confusing.
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.
SUGGESTED BUILD STACK
Expo Camera
React Navigation
Zustand
Expo Permissions
React Native Vector Icons
Axios
BUILD KIT DIFFICULTY
Starter
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.
