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
Profit Identifier - Thriftd
Thriftd turns your iPhone camera into a thrift store expert.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
6 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Profit Identifier - Thriftd: 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 a more reliable scanning algorithm and user feedback.
Assumption to check: Users often find barcode scanning inaccurate or slow.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance product details and reviews sections.
Assumption to check: Limited product information may lead to poor purchasing decisions.
Validate with people who use this workflow before building.
Hypothesis 3
Thoroughly test navigation flows and improve stability.
Assumption to check: Frequent crashes or bugs during navigation.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a wishlist feature to save favorite products.
Assumption to check: Lack of personalization features like wishlists.
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
Thriftd turns your iPhone camera into a thrift store expert. Point. Scan. Know exactly what you're holding. Whether you're hunting at charity shops, car boot sales, or vintage markets — Thriftd gives you instant AI-powered identification of any clothing or item. Get the brand, era, condition, and estimated resale value across platforms like eBay, Vinted, Depop, and Poshmark in seconds. WHAT THRIFTD DOES NEW Feature: Map over all thrift stores across the whole world! • Identifies brands, eras, and styles instantly using AI • Shows estimated resale value based on recent real marketplace sales • Tells you which platform to sell on for the best return • Warns you when an item isn't worth picking up • Tracks your thrifted portfolio and total collection value • Supports 15+ currencies worldwide BUILT FOR THRIFTERS Whether you're a casual thrifter or a serious reseller, Thriftd helps you make smarter decisions on the floor — before you buy. No more guessing. No more going home to research. Just scan and know. TRACK YOUR FINDS Every scan is saved to your personal portfolio. Watch your collection value grow, track your streak, and earn achievement badges as you level up your thrifting game. IMPORTANT Resale estimates are based on recent public marketplace listings and are provided for informational purposes only. Actual sale prices vary. Thriftd does not guarantee any outcome. This is not financial or investment advice. AI identification is powered by a third-party AI provider. Results may vary and should always be verified before making purchase decisions. FIND US HERE - TikTok: www.tiktok.com/@thriftd_app - Instagram: www.instagram.com/thriftd.app Terms of Service: https://thriftd.app/terms-of-service Privacy Policy: https://thriftd.app/privacy-policy Support: https://thriftd.app/support *PREMIUM FEATURES REQUIRE A SUBSCRIPTION. TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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
Axios
React Navigation
expo-camera
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.
