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
iBeer - Drink from your phone
Drink beer on your iPhone
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
3,617 ratings · Top 15%
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 included18 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 iBeer - Drink from your phone: 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
Add social sharing features to enhance user engagement.
Assumption to check: Limited engagement after initial novelty wears off
Validate with people who use this workflow before building.
Hypothesis 2
Introduce beer trivia or mini-games during drinking simulation.
Assumption to check: Repetitive experience can become boring
Validate with people who use this workflow before building.
Hypothesis 3
Provide clear explanations of benefits for each purchase option.
Assumption to check: In-app purchases can be unclear
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to create custom beer types or choose ingredients.
Assumption to check: Lack of customization 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
Drink beer on your iPhone. Voted "Best of iTunes" and downloaded over 90 Million times! This hilarious visual trick behaves like a real glass of beer. Connect with friends or strangers for drink sharing, live voice chat and photo sharing! Tilt to drink, shake for foam, even pour iBeer into other iPhones. ___________________________________ "Best iPhone app" (CNN & NY Times) "Must-have iPhone app" (FORTUNE & TIME) "Top 10 iPod touch app" (Newsweek) "iTunes Bestseller Awards" (Apple Charts) ___________________________________ Get 4 different types of beer, steaming hot coffee, and mouthwash by switching off the ads. Milk, Soda, Wine, Water, Champagne, Vodka etc. available separately. Select your own photo backgrounds or use our included trick screens. You've seen it on TV, YouTube, and read about it in your favorite paper. Now it can be yours! Bonus burp included. Get it today and stop those hangovers forever! CHECK OUT OUR NEW APP: InstaPrompter. Secret LIVE Teleprompter hidden inside a fake Note App to win meetings and interviews: http://www.instaprompter.com
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
react-native-reanimated
react-navigation
react-native-gesture-handler
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.
