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
Caveau: Wine Cellar
Caveau is effortless cellar management for people who take wine seriously.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
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.
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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 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 Caveau: Wine Cellar: 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
Include social features to share wine collections and reviews.
Assumption to check: Limited user engagement features like social sharing.
Validate with people who use this workflow before building.
Hypothesis 2
Integrate wine recommendations based on user preferences.
Assumption to check: Lack of detailed wine information and recommendations.
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline storage for user collections.
Assumption to check: No offline access to collection data.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance premium subscription with exclusive content and features.
Assumption to check: Inadequate premium features for monetization.
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
Caveau is effortless cellar management for people who take wine seriously. SCAN AND DONE Point your camera at any label. Producer, wine, vintage, region — filled in before the bottle is back in the rack. ——— Caveau Pro — Auto-Renewable Subscription • Monthly: $4.99 / month • Annual: $44.99 / year (Save 25%) Payment is charged to your Apple ID at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getcaveau.com/privacy.html KNOW WHEN TO DRINK Every bottle gets a drinking window tuned to its grape, region, and structure. A quiet notification tells you when something comes into its own — and the Ready to Drink view always knows what to open tonight. A JOURNAL THAT WRITES ITSELF Log a bottle with stars and a note. Your history becomes a beautiful tasting journal — and every great night becomes a shareable card. SWITCHING IS NOTHING Coming from CellarTracker or InVintory? Export your cellar as a CSV and bring every bottle — vintages, prices, bins, and your own drinking windows — into Caveau in under a minute. THE AUDIT (PRO) The feature no other cellar app has: reconcile what you think you own against what's actually in your racks, bottle by bottle. FLAT, FAIR PRICING Adding bottles, scanning, search, drinking windows, and food pairings are free forever. Caveau Pro ($4.99/month or $44.99/year) unlocks the cellar audit, advanced analytics, biodynamic tasting calendar, market valuations, and CSV/PDF export. One price at any cellar size — we will never charge you per bottle. Also in Caveau: • Wishlist — track the wines you're hunting; one tap moves a find into the cellar • Sommelier food pairings and serving guidance for any bottle • Wine trivia of the day to sharpen your palate • Sign in with Apple, Google, or email — your cellar syncs across devices
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
FastAPI
Axios
React Native Paper
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.
