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.
FODMAPLAB is the perfect companion app for Low FODMAP dieting
$2.99
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Your first Build Kit is free with a verified email.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for FODMAPLAB: Low FODMAP Diet App: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
FODMAPLAB is the perfect companion app for Low FODMAP dieting. Easily lookup foods and their FODMAP contents, record your experiences and symptoms, and keep track of how your symptoms change over time. Easily lookup your favorite foods: - Learning about foods and their FODMAP contents has never been easier. FODMAPLAB lets you search a wide variety of foods, use and combine filters, and browse through categories and collections of foods. - For each food we provide you with an overview of its FODMAP contents, portion size guidelines (for foods moderate in FODMAPs) and a summary of your past experiences with the food. Track symptoms with the journal: - The journal is designed to help you easily record your daily symptoms. You can record symptoms in categories like 'pain and cramping', 'gas and bloating', and 'fatigue and tiredness'. - In addition to symptoms you can also add notes and food experiences to your journal. Visualize your data and gain insights: - We provide you with beautiful graphs and key statistics based on the data you record in the journal. - Following the development of your symptoms over time will help you understand your progress, and the impact of your dietary choices. All the while keeping your data private: - We never send your data to our servers - the app has been designed to function 100% offline. - We only store data on your device. It is then your choice if you want to share or take backups of your data.
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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
Assumption to check: Limited food database with potential inaccuracies
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficult navigation between food and recipes
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Low user engagement due to lack of interactive features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Poor user ratings due to app crashes and bugs
Validate with people who use this workflow before building.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
Not assessed in a Build Kit yet.
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.