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
Kura Sushi Rewards
• The NEW and improved Kura Sushi Rewards loyalty app is here!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
9,460 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 included16 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 Kura Sushi Rewards: map the core Food & Drink 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 detailed reward tracking and history.
Assumption to check: Limited rewards visibility and tracking options.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize backend and frontend performance for better speed.
Assumption to check: Inconsistent app performance during high traffic times.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize orders with additional options.
Assumption to check: Limited customization in order preferences.
Validate with people who use this workflow before building.
Hypothesis 4
Add features to share rewards on social media.
Assumption to check: Lack of social sharing features for rewards.
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
• The NEW and improved Kura Sushi Rewards loyalty app is here! • With Kura Revolving Sushi Bar’s NEW rewards app, you’ll receive promotional coupons, earn points for your purchases, and access your local Kura Revolving Sushi Bar waitlist, remotely! • Receive 300 bonus points when you sign up or migrate your existing Kura Sushi account to the new Kura Sushi Rewards app. EARN MORE REWARDS • Earn 10 points for every $1 spent in the restaurant or online at order.kurasushi.com and receive 300 bonus points when you sign up or migrate your account. • Automatically unlock a $5 Reward* at 500 points! • 500 points automatically unlocks a $5 Reward*. • Birthday Reward** - Get a complimentary dessert on your birthday. Choose from: Taiyaki Ice Cream, Japanese Style Soy Milk Donuts and Mochi Ice Cream. JOIN THE WAITLIST REMOTELY • Browse locations, check operating hours and get directions. • View live wait times and join the waitlist remotely. • Get notified via email or SMS when it’s almost your turn. Message and data rates may apply. • Check your estimated wait time and place in line. ORDER ONLINE • Access our online ordering platform on the app. PROMOTIONAL OFFERS • Get 300 Bonus Points for signing-up or for migrating your account from the previous Kura Sushi app. • Earn $5 Rewards for every $50 you spend • Plus a free dessert for your birthday! *One (1) $5 Reward can be used with a minimum $15 purchase (before tax and tip). Up to two (2) $5 Rewards can be used in a single transaction with a minimum $30 purchase. May not be combined with Birthday Reward. **Birthday Reward valid for dine in only. Cannot be combined with any other coupon or discount. Limit (1) Birthday Reward discount per transaction.
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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
Supabase
React Navigation
Expo Location
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.
