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.
CalcMadeEasy combines powerful financial tools, a feature-rich calculator, unit converter, and smart auto note-taking — all in one easy-to-use app
$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 CalcMadeEasy Pro: 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: Limited advanced calculation features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No dark mode option
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of user customization
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited history management
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.
CalcMadeEasy combines powerful financial tools, a feature-rich calculator, unit converter, and smart auto note-taking — all in one easy-to-use app. Whether you're managing loans, converting units, or doing everyday math, this app has you covered. **Key Features: *Financial Calculations & Planning: Make smarter financial decisions with built-in tools for: -Home or car purchase planning -Loan affordability analysis -Detailed amortization schedule generation -Refinance savings estimation -Monthly savings needed for long-term goals -Total interest paid on a loan All calculations are automatically saved as notes and can be shared — perfect for planning with family or advisors. *Unit Conversions: Traveling or dealing with different measurement systems? Effortlessly convert between various units across categories. *Advanced Calculator: Perform basic, scientific, or RPN calculations: -Clean, intuitive interface with multiple themes -Access to universal constants -RPN mode with stack editing (delete/reorder/swap) -Calculation history and check features *Auto Note-Taking: Never lose track of important calculations! -Automatically records inputs and results -Easily share notes for financial decisions -Can be turned off in settings if preferred It’s like having 4 apps in 1 – all at a great value! Start using CalcMadeEasy and simplify your calculations, conversions, and financial planning — all in one place.
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.