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.
21 Days Sugar-Free is a simple daily companion that helps you complete a 21-day sugar-free challenge, understand your cravings and stay motivated.
$0.99 · In-app purchases
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.
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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 21 Days Sugar-Free: map the core Lifestyle workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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 user engagement features such as reminders or notifications
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of community support features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inadequate tracking of sugar intake over time
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited recipe variety and search capabilities
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
21 Days Sugar-Free is a simple daily companion that helps you complete a 21-day sugar-free challenge, understand your cravings and stay motivated. Instead of complicated diet plans, you only answer a few simple questions every day and watch your progress grow. How it works Start your personal 21-day program with a chosen start date Every day, answer two quick questions: “Did I stay sugar-free today?” “How strong were my sugar cravings?” (1–5) See what’s typically happening in your body that day during the sugar detox process Read short motivational notes to keep you on track Track your stats: Current streak Longest streak Total sugar-free days Average craving level Follow your 21-day journey on a visual progress board Set a daily reminder so you don’t miss your check-in Why 21 days? A new habit starts with consistency. 21 days is a clear, doable time frame to reduce sugar, observe how you feel and build a healthier routine at your own pace. Who is it for? Anyone who wants to cut down on sugar People who struggle with sugar cravings and want to understand their patterns Those who prefer gentle guidance instead of strict diet rules Important Notice This app does not provide medical advice, diagnosis or treatment and is not a substitute for professional healthcare or a personalized diet plan. If you have diabetes, insulin resistance or any other medical condition, please consult your doctor or dietitian before changing your eating habits. Give yourself 21 days of awareness and kindness. Less sugar, clearer progress, more control over your cravings.
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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.
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.