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
Fantastic Coffee Guide
Fantastic Coffee Guide helps you understand coffee from the ground up — how to choose it, store it, grind it, and brew it with confidence.
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
4 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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Fantastic Coffee Guide: 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 quizzes or user-generated content to enhance engagement.
Assumption to check: Limited user engagement due to lack of interactive features.
Validate with people who use this workflow before building.
Hypothesis 2
Implement personalized recommendations based on user preferences.
Assumption to check: Difficulty in discovering new content.
Validate with people who use this workflow before building.
Hypothesis 3
Add social sharing options to allow users to share favorite coffee types and recipes.
Assumption to check: Lack of social features.
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate rating and review features for users to share experiences.
Assumption to check: No user feedback system.
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
Fantastic Coffee Guide helps you understand coffee from the ground up — how to choose it, store it, grind it, and brew it with confidence. If you’ve ever brewed a cup with good beans and high hopes — and still ended up disappointed — you’re not alone. The good news? Most people are just a few simple fixes away from reliably delicious, repeatable coffee at home. That’s where this guide comes in. It takes the mystery out of coffee and helps you brew a slurp-worthy cup you’ll look forward to every day. Inside the app you’ll find: • Coffee basics made approachable, from freshness to roast levels • Step-by-step brew guides for popular methods • Grind size help for every brew style • Clear ratios, temperatures, and tools • Batch brew calculator • Savings calculator for brewing coffee at home • ROI calculator to know how quickly you'll pay off your coffee gear when brewing at home • Quick answers for your coffee questions Fantastic Coffee Guide is based on the book From Just Fine to Fantastic Coffee by Liz Roquet, founder of Lizzy’s Fresh Coffee. Liz has spent years helping home brewers with practical guidance to brew awesome coffee at home. Friendly, clear, and right at your fingertips — this app is here to help as you brew and sip.
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
FastAPI
Axios
React Query
shadcn/ui
BUILD KIT DIFFICULTY
Starter
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.
