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.
I started off selling small handmade items on various sites
$1.99 · 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 Craft Pricing Helper: map the core Business 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 features for advanced pricing calculations.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface can feel cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No dark mode or customization options.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No cloud sync for pricing history.
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.
I started off selling small handmade items on various sites. Initially, I struggled with pricing. How do you balance costs, while at the same time making a decent profit. To achieve this balance I spent a lot of time with paper and calculators trying various options. I eventually decided that there should be an app to do it for me. Craft Pricing Helper was written to quickly solve that problem. While, I personally use it for Etsy sales it isn't tied to that platform. I left the options open to be of use in as many cases as possible. If you usually time your project building in minutes, simply click on the word hours to switch to minutes. You can switch back by pressing the word minutes and it will all be converted for you. The app allows you to put a length of time to construct the project, the amount per hour you want to get paid, material cost and other costs you may have. Using that information it will come up with your total cost. Using the cost, you set a margin and it will tell you the price you should charge along with the profit you will make. It doesn't get any easier than that.
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.