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
WISEShopping
「賢い買い物」は、毎日のお買い物を効率よく、無駄なくできる買い物リスト作成アプリです。
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 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 WISEShopping: 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 an algorithm for personalized product suggestions based on user behavior.
Assumption to check: Many shopping apps lack personalized recommendations.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the checkout flow to require minimal inputs and offer guest checkout.
Assumption to check: Users often find checkout processes too complicated.
Validate with people who use this workflow before building.
Hypothesis 3
Include real-time tracking with push notifications for order status updates.
Assumption to check: Inadequate order tracking features.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate multiple payment options including Apple Pay, credit cards, and PayPal.
Assumption to check: Limited payment options can frustrate users.
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
「賢い買い物」は、毎日のお買い物を効率よく、無駄なくできる買い物リスト作成アプリです。 「メモ」では、メモをテキストとフォトで記入できるようにしています。 「リスト更新」では、買い物頻度の高い順番にリストされ、タップすると 登録/在庫更新できます。 「登録/在庫更新」では、購入店、商品のカテゴリー、商品、クーポン、家の在庫状況をストックのバーで、さらに商品のフォトも、入力できます。 商品カテゴリーは、 1.野菜、 2.お魚、3. お肉 等々 お店の商品の棚の順番に定義します。 初期画面「リスト更新」の「買い物リスト」をタップすると、お家の在庫が50%以下の商品の買い物をお店別、お店の商品棚別(カテゴリー別)に リストが表示されます。
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
Supabase
Zustand
react-native-reanimated
expo-router
BUILD KIT DIFFICULTY
Intermediate
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.
