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
Thrift Scan: Identify Profit
Thrift Scan
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 5.0
1 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 included15 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 Thrift Scan: Identify Profit: 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 filtering and sorting options for better user experience.
Assumption to check: Limited filtering options for items
Validate with people who use this workflow before building.
Hypothesis 2
Optimize scanning functionality to speed up image recognition.
Assumption to check: Slow scanning process
Validate with people who use this workflow before building.
Hypothesis 3
Add a community review section for better item evaluation.
Assumption to check: Lack of user reviews and community feedback
Validate with people who use this workflow before building.
Hypothesis 4
Integrate a reliable pricing API to ensure accurate data.
Assumption to check: Inconsistent item pricing data
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
Thrift Scan Thrift Scan helps you understand the real value of secondhand items before you buy. Simply take a photo and the app analyzes brand details, condition, and estimated resale value using real marketplace data. Whether you thrift casually or flip items for extra income, Thrift Scan helps you make smarter decisions and avoid overpaying. Instead of guessing, you get clear insights in seconds. How it works • Take a photo of any item • Thrift Scan analyzes real sold listings from marketplaces • See an estimated resale value and demand • Decide whether to buy or skip with confidence Key features • Instant resale value estimates based on real sales • Brand, material, and condition recognition • Market price comparison across platforms • Profit potential analysis before you buy • Scan history and saved items Works with clothing, accessories, collectibles, books, antiques, electronics, and more. Who it’s for • Thrift flippers and resellers • Side hustlers looking for extra income • Vintage and collectible enthusiasts • Anyone who wants to shop secondhand with confidence Antique identifier by photo Use Thrift Scan as a personal antique identifier and appraiser. Take a picture to receive identification, estimated value, and resale potential while shopping secondhand. Important notes Results are estimates based on AI analysis and market data. Actual resale prices may vary. By using the app, you agree to the Terms of Use and Privacy Policy. Terms of Use (Apple EULA): 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
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expo-camera
@react-native-async-storage/async-storage
axios
BUILD KIT DIFFICULTY
Advanced
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.
