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
Oeni: #1 Wine Cellar Manager
The most downloaded wine cellar app since 2024
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
961 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 included16 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 Oeni: #1 Wine Cellar Manager: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
The most downloaded wine cellar app since 2024. Scan a label: Oeni finds the bottle, tells you when to open it and what it's worth. Oeni is the wine cellar management app that brings together a wine scanner, peak-date tracking, cellar value and a food-pairing sommelier, with 400,000+ wines in its database. YOUR WINE CELLAR, BOTTLE BY BOTTLE - Wine scanner: photograph the label and Oeni recognizes the wine, vintage and appellation in seconds. 400,000+ wines and 2,400 appellations in the database. - 3D cellar: see your bottles laid out as in your real cellar. - Wine inventory and tracker: real-time stock, purchase price and history for every bottle you add or drink. - Peak date: for each vintage, Oeni works out the ideal drinking window and shows which bottles are ready now. YOUR CELLAR'S VALUE, UPDATED EVERY MONTH - Market prices: Oeni retrieves the market price of each bottle and updates the total value of your collection. - Capital gains: compare purchase price and current value, bottle by bottle. - Spending: follow your wine budget month by month and year by year. A SOMMELIER IN YOUR POCKET - Food and wine pairing: 5,400+ pairings to find the bottle in your cellar that matches tonight's dish. - Recommendations by occasion: everyday wine, dinner with friends, special occasion. Oeni combines pairing, peak date and value, and ranks your bottles with a recommendation score. - Wine details: grape, region, appellation, reviews and ratings for every wine. WHO IS OENI FOR? Collectors tracking the value and peak of hundreds of bottles, wine lovers who just want to know what to open tonight, and anyone tired of spreadsheets and notebooks. Privacy policy: https://oeni.app/privacy-policy/ Terms of use: https://oeni.app/terms-of-use/
Written user reviews are not shown here. Check current App Store reviews >
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 better filtering and sorting options.
Assumption to check: Users find it difficult to manage large collections.
Validate with people who use this workflow before building.
Hypothesis 2
Add features to pull data from external wine databases.
Assumption to check: Limited integration with wine databases.
Validate with people who use this workflow before building.
Hypothesis 3
Clarify subscription benefits and provide a detailed comparison.
Assumption to check: In-app purchase confusion regarding premium features.
Validate with people who use this workflow before building.
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
Axios
React Navigation
Zustand
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.
