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
Koupon: Real Deals & Codes
Koupon – Next-gen deal shopping app that helps you shop smarter, save more, and uncover discounts you never knew existed.
Free · In-app purchases
OVERALL US RANK
#58
Free · all categories
REVENUE (Est)
$162K/mo
$91K - $232K
RATING
★ 4.9
34,239 ratings · Top 5%
Evidence scope: #58 is the current overall US Free chart position. 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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 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.
JavaScript is required to complete mailbox verification.
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 Koupon: Real Deals & Codes: map the core Shopping workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 robust search feature with filters and categories.
Assumption to check: Users often find it difficult to navigate to desired deals quickly.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize their home feed based on interests.
Assumption to check: Limited personalization options for users' preferences.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the subscription process and provide clear benefits for each tier.
Assumption to check: In-app purchase options can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce customizable notification settings to enhance user control.
Assumption to check: Notifications may be overwhelming, leading to user disengagement.
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
Koupon – Next-gen deal shopping app that helps you shop smarter, save more, and uncover discounts you never knew existed. Multi-Platform Support: Discover a new world of verified promo codes and deals for Amazon, eBay, Walmart, Woot!, Macy’s, Best Buy, Newegg, etc. Deal insights: Smart analysis based on product features, pros and cons, discount history and deal quality, so you know what’s truly worth buying. Verified Promo Codes: Codes are checked and validated every minute to ensure it actually works. Deal Alerts: Get notified about all-time lows, flash sales, Black Friday deals, and trending items. Easy to Use: Step-by-step guides and live chat support make applying promo codes simple and smooth. Zero Privacy Risk: Apply codes directly at merchant’s checkout. We never handle your payment or any sensitive information. Save on what you need, afford what you love, and discover deals you didn’t even know. Download Koupon today!
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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-reanimated
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.
