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.
Losing weight is hard to do, especially when you don’t have the time to count calories or make special meals
$2.99 · 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 3 Day Diet: map the core Health & Fitness 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 meal customization options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No community features for support
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Subscription model may deter users
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.
Losing weight is hard to do, especially when you don’t have the time to count calories or make special meals. The 3 Day Diet has done all the planning for you so you can go on with your life while shedding pounds. Just follow the simple meal plan with ingredients already in your fridge and lose up to 10 pounds in 3 days. That’s it! One successful 3 Day Dieter said: “This is a wonderful app!” Kathy This is our original 3 Day Diet and it's a low-fat, low-carb diet of lean protein, whole grains, fruits and vegetables that makes losing weight fast and easy. There are no special foods to buy or confusing meal plans or schedules. You don’t even have to cook or exercise! And since it’s only 3 days, there isn’t time to get bored or fall off the wagon. And if you have more weight to lose, simply start over again after 4 days of normal eating. And now there's even direct personal support to answer all of your dieting questions! Features include: • At-a-glance meal tracker Quickly see your day’s meals and check them off as you go • Easy-to-read shopping list Every ingredient you need for all 3 days on one list. Take it with you to the store and check off items as you fill your cart. • Weight loss progress chart Graphically monitor your weight loss to literally see the pounds drop. •Personal support Get your questions answered quickly and confidently. • List of approved food substitutions Customize the diet to your preferences without cheating • Diet Guidelines Handy reminders to ensure your success over the next three days. Dieting doesn’t have to be complicated. Make it simple and start the 3 Day Diet today! TESTIMONIALS: “I love this!” Grace “Thanks for the info. I appreciate it. Good app and support answers questions so quickly and is very helpful!” Angie “Diet is going well, we are losing weight. Thanks!” Anthony
Written user reviews are not shown here. Check current App Store reviews >
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.