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
On: Shop Shoes & Apparel
Be on the inside track
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
73,428 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.
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'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.
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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 On: Shop Shoes & Apparel: 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 filters for categories, sizes, colors.
Assumption to check: Limited filter options for searching products
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading and caching for smoother experience.
Assumption to check: Inconsistent loading times for images
Validate with people who use this workflow before building.
Hypothesis 3
Add guest checkout feature to enhance user convenience.
Assumption to check: No guest checkout option
Validate with people who use this workflow before building.
Hypothesis 4
Integrate multiple payment methods including digital wallets.
Assumption to check: Limited payment options
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
Be on the inside track. The On app is here to help you customize your shopping experience. To make it more tailored to your interests and needs. To make it more personal. And quick. Well, speed is our thing, right? You’ll also have access to exclusive promotions and limited edition products. Plus, it’s a seamless shopping experience from start to finish. Gain valuable seconds with the On app. On. Anytime. Anywhere. Our app helps you shop shoes, apparel and accessories from anywhere. It'll even make suggestions based on what you love. (All as speedy as your personal bests.) Stay one step ahead. With your account, you'll be the first to know about fresh colors and the latest fits – plus, exclusive access to promotions and new launches. Last season's picks. Special prices. Shop key pieces from previous seasons. They never go out of style. Orders at your fingertips. With your preferences and info securely stored, checkout is a breeze (much like our lightweight running gear). You can easily track or manage your orders, all in one place. The On app. Ignite your spirit through movement. Download today.
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
Zustand
Axios
React Navigation
shadcn/ui
BUILD KIT DIFFICULTY
Expert
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.
