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
Barcodes: Loyalty Card Wallet
Say goodbye to bulky wallets and hello to convenience with Barcodes - the ultimate digital wallet! Barcodes is the privacy-friendly solution to store and manage all your QR codes, barcodes, loyalty cards, reward cards...
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
1,134 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.
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What's included19 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 Barcodes: Loyalty Card Wallet: 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
Allow users to customize card types and details.
Assumption to check: Limited support for different types of loyalty cards
Validate with people who use this workflow before building.
Hypothesis 2
Implement notification reminders for users.
Assumption to check: No reminders for card expiration or points updates
Validate with people who use this workflow before building.
Hypothesis 3
Enhance barcode scanner functionality with flash support.
Assumption to check: Difficulty in scanning barcodes in low light
Validate with people who use this workflow before building.
Hypothesis 4
Provide integration options with popular loyalty programs.
Assumption to check: Lack of integration with external loyalty programs
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
Say goodbye to bulky wallets and hello to convenience with Barcodes - the ultimate digital wallet! Barcodes is the privacy-friendly solution to store and manage all your QR codes, barcodes, loyalty cards, reward cards, and gym membership tags in one place. With Barcodes, you can easily scan and store your cards using your device's camera or import them directly from your photo library - even screenshots will work seamlessly! Plus, with iCloud storage and sync, you can access your cards across all your devices without needing a separate account. Key Features: - Digital wallet to safely store your cards - Automatic card scanning using your device's camera - Effortless import from your photo library and screenshots - iCloud storage and sync for easy access across devices - Customizable card colors and symbols, with supported store logos - Home screen and lock screen widgets for quick card access - Add cards to Apple Wallet with optional location support - Apple Watch companion app for on-the-go convenience - Store 3 cards forever for free (including Apple Wallet and Apple Watch integration) - Dark mode support for a sleek look Barcodes Unlimited Features: - Store an unlimited number of cards in your wallet - Organize cards into folders and share with family or friends via iCloud - Choose once-off lifetime purchase or subscription to suit you - Choose from a variety of app icons to suit your style Terms of Use can be found at https://smallcolossus.com/terms and Privacy Policy can be found at https://smallcolossus.com/privacy. Happy scanning!
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
Supabase
TypeScript
@react-navigation/native
expo-image-picker
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.
