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.
The smart, modern, and elegant calculator app - optimized for multi-touch
$7.99
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 Inseries Pro: Smart Calculator: 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 mathematical functions compared to other calculators
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No history of calculations feature
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: User interface could feel outdated
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.
The smart, modern, and elegant calculator app - optimized for multi-touch * Easy, logical entering of calculations and clear history of previous results * Built-in calendar functions (e.g., number of days between two dates) * Naturally adding and subtracting percentages (e.g., 99+20% taxes or 79-30% discount) * Gesture support for fast access to previous results and memory Inseries is the slightly different professional calculator app that allows you to naturally enter calculations and clearly browse your previous results. Simply type in "100+20%" to add taxes, or "100-30%" to easily calculate a discount. Inseries even shows you "pi" as a real constant instead of just a number. Inseries' clear user interface is designed for multitouch allowing us to come by with a small and simple keypad based on the clear keypad layouts of typical financial and business calculators. By using choosers for quickly accessing functions and constants we could bring in scientific calculator functionality without sacrificing usability. Intelligent professional calculator * Fast access to common, date, and scientific functions and constants * Natural adding and subtracting of percentages * Quick-sum function for fast adding of multiple numbers * Real random value generator for rand() function Simple and clear user interface * Easily enter calculations in a spreadsheet-like way * Copy results and paste support for calculation field * Fast switching between all, 2, and 4 fraction digits * Swipe-gestures for storing, recalling and clearing memory Persistent calculation and result history * Built-in database for previous calculations and results * Back-functionality for going back to previous calculation * Persistent settings, e.g., for fraction digits mode * Variable-style access to memory ("M") and result ("R")
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.