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.
// Overview
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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 MicroCalc for microwave oven: 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 food database and calculations
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No user profiles or saved history
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of visual appeal
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited support for cooking methods
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.
// Overview This app calculates the heating time of the microwave. // Features ・ You can calculate the heating time with a simple button operation. ・ Microwave oven wattage (power consumption) is supported from 100W to 1400W. ・ You can change the wattage of the microwave you are using (50W units). // How to use ・ Enter the wattage and time displayed in the recipe or cookbook as follows. 1. After entering the wattage using the number buttons, press the [W] button. 2. Enter the minutes using the number buttons, and then press the [Minute] button. 3. Enter the seconds using the number buttons, and then press the [Second] button. 4. Press the [=] button at the end to display the calculated heating time. 5. When the amount of food to be heated is half or double, the heating time can be corrected. // Others ・ Press the [Clear] button to clear the input operation in the middle. ・ You can enter wattage and time even if the order is reversed. ・ If it is less than 1 minute, it can be calculated by entering only seconds. ・ By moving the slider to the left or right, you can change the initial wattage of the microwave oven. ・ The wattage being set is displayed at the top of the screen. ・ You can change the appearance color of the microwave by swiping the display part left or right. ・ If you want to mute the sound effect, operate the settings button.
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.