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.
You and your spouse may have retirement savings in a 401(k) plan, IRA, or cash and investments.
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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 When Can We Retire: map the core Finance 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: Users often find retirement apps lacking in personalized insights
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Data input can be tedious and error-prone
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Many apps do not visualize savings effectively
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Subscription models can be unclear and frustrating
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.
You and your spouse may have retirement savings in a 401(k) plan, IRA, or cash and investments. **App Highlights** *The "When Can We Retire" app calculates your retirement age based on numerous optional inputs such as your current salary, yearly salary increase, yearly retirement contribution, yearly contribution increase, employer matching contribution, post-retirement expense, social security, and other retirement income. *This unique app factors in the retirement age calculation that you cannot withdraw your retirement savings from a 401(k) plan and IRA before you turn 59 ½ without incurring a possible 10% penalty. *This app considers that you can contribute only up to a specific maximum limit to your employer-sponsored retirement plan. For example, you can contribute a maximum of 23,000 dollars to your 401(k) for this year as per the current law. However, there is a catch-up contribution limit of an additional 7,500 dollars if you are aged 50 and older. *The app considers the combined total of your contributions and employer matching contributions cannot exceed your salary or 69,000 dollars for this year as per the current law. There is a catch-up contribution limit of an additional 7,500 dollars if you are aged 50 and older. *This app lays out a clear picture of your finances with both a pre-retirement and post-retirement plan. *The app allows you to email your pre-retirement plan and post-retirement plan in tabular and graphical views to yourself or others. *This app saves your inputs and retains them across the launches upon successful retirement age calculation. *You can share the app via email, Facebook, or Twitter from within the app. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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.