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
Thrifty: AI Profit Identifier
Transform your thrift shopping with Thrifty - the AI-powered app that instantly identifies items and reveals their true market value!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
405 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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 included18 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 Thrifty: AI Profit Identifier: 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
Transform your thrift shopping with Thrifty - the AI-powered app that instantly identifies items and reveals their true market value! SMART ITEM SCANNING • Point, scan, and discover what you've found • AI identifies brands, styles, and product details instantly • Get real-time price estimates and market values MAXIMIZE YOUR SAVINGS • Know if you're getting a great deal before you buy • Compare thrift prices to retail and resale values • Spot underpriced designer items and vintage treasures PERFECT FOR: • Thrift store enthusiasts and bargain hunters • Resellers looking for profitable flips • Anyone wanting to shop smarter and save money • Vintage collectors seeking authentic pieces PREMIUM FEATURES • Unlimited item scanning and analysis • Advanced AI recognition technology • Detailed brand and authenticity insights • Price history and market trends Whether you're hunting for designer clothes, rare collectibles, or everyday steals, Thrifty gives you the confidence to shop like a pro. Turn every thrift store visit into a treasure hunt! Join the free plan and receive an AI thrift report. Download Thrifty today and start discovering hidden gems that others walk right by. Make sure to read the terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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 personalized recommendations using user data and AI.
Assumption to check: Limited product recommendations based on user preferences.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify UI/UX by categorizing options and enhancing navigation.
Assumption to check: Cluttered interface with too many options.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize API calls and incorporate caching strategies.
Assumption to check: Slow loading times when fetching data.
Validate with people who use this workflow before building.
Hypothesis 4
Add features for users to share finds on social media.
Assumption to check: Lack of user engagement features like social sharing.
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
React Native
Expo
Zustand
axios
react-navigation
react-native-paper
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.
