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
Kung Fu Tea
Welcome to America’s Bubble Tea - Kung Fu Tea Mobile app
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
9,885 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 Kung Fu Tea: 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
Introduce more payment gateways like PayPal or Apple Pay.
Assumption to check: Limited payment options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement a live chat feature for real-time support.
Assumption to check: Slow customer service response times
Validate with people who use this workflow before building.
Hypothesis 3
Add a guided tour or tutorial for first-time users.
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 4
Enhance real-time tracking accuracy and notifications.
Assumption to check: Inconsistent order tracking updates
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
Welcome to America’s Bubble Tea - Kung Fu Tea Mobile app. Do you live and breathe Kung Fu Tea? Do you crave boba all the time, no matter where you are? With the Kung Fu Tea Mobile app, you can place an order anywhere. Just choose pick up or delivery and get your favorite tea while earning rewards! Enjoy mobile ordering and earn free boba! - ORDER AHEAD: Need a quick boba fix? Skip the lines. Skip the wait. Order ahead and pick up in-store. - ORDER DELIVERY: Get Kung Fu Tea delivered to you anywhere and earn rewards! - REAL-TIME ORDER TRACKING: Track your contactless delivery order in real time, from the store to your door. - CUSTOMIZED MENU - We’ll remember what drink you like, your favorite toppings and how you like it (sugar level, ice level) for fast re-ordering. - BUILT-IN REWARDS: Get 2 bubbles for every $1 spent! You’ll unlock free drinks on your birthday**, first sign-up* and for every 168 bubbles earned. - EXCLUSIVE DEALS&REWARDS: Enjoy our exclusive app promos and win instant in-app prizes! - DIGITAL GIFT CARDS: Easily send Kung Fu Tea e-gift cards to your friends and family. - REFERRAL CREDIT: Refer a friend, get app credit for your next purchase. - PROMO CODES: Unique promo codes to redeem customer rewards. - STORE LOCATOR: Find Kung Fu Tea locations nearby. *One (1) Free standard on signup available for new app users. **Must be Red Belt status to be eligible for a free birthday drink (up to $6). Talk about a win! Download today! Questions or comments? Email [email protected] or visit www.kungfutea.com/app
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
React Navigation
React Native Maps
Redux
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.
