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.
Review files and run data analysis on the go
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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 Microsoft Excel: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Review files and run data analysis on the go. Customise tables the way you want with robust formatting tools and great features. Excel lets you build your spreadsheet to meet your specific needs. Get the power of AI with Copilot in your favourite apps when you sign in with your Microsoft 365 subscription. Create templates, edit spreadsheets, organise charts and share with ease when you download Microsoft Excel. Tables and Spreadsheets: Create, Calculate and Analyse • Jump-start your budget, task list, accounting or financial analysis with Excel’s modern templates. • Rich productivity features and formatting options make your workbook easier to read and use. Productivity App: Review, Edit and Work Anywhere • Refresh sheet data or update your task list from anywhere. • Spreadsheet features like sort and filter columns help focus your reviews. • Create, duplicate, hide and unhide sheets easily. Data Analysis: Discover Key Insights on the Go • Analyse data using charts and graphs. • Highlight key insights using chart labelling features. • Visualise data at a glance. Finance Budgeting and Accounting: Simplify Personal Finance • Use spreadsheets and charts to help manage budgets. • Familiar tools to help you drill down to your exact finance needs. • Calculate tax estimates, personal finances and more. Draw and Annotate with Ink: Capture Ideas on the Page • Make notes, highlight your worksheet, create shapes or write equations using the draw tab feature on devices with touch capabilities. Sharing Made Easy: Collaborate Anywhere • Share your files with a few taps to quickly invite others to edit, view or leave comments directly in your workbooks. • Copy the content of your worksheet in the body of an email message with its format intact or attach or copy a link to your workbook for other sharing options. • Send worksheet content in an email while preserving formatting or send a link to your workbook. AI Assistance with Copilot* • Summarise data and highlight trends quickly. • Generate charts and tables from raw data with simple prompts. • Get intelligent recommendations for budgeting and forecasting. REQUIREMENTS: 1 GB RAM or above To create or edit documents, sign in with a free Microsoft account on devices with a screen size smaller than 10.1 inches. *Unlock the full Microsoft 365 experience with a qualifying Microsoft 365 subscription for your phone, tablet, PC and Mac. This app is provided by either Microsoft or a third-party app publisher and is subject to a separate privacy statement and terms and conditions. Data provided through the use of this store and this app may be accessible to Microsoft or the third-party app publisher, where applicable, and transferred to, stored and processed in the United States or any other country where Microsoft or the app publisher and their affiliates or service providers maintain facilities. Please refer to Microsoft's EULA for Terms of Service for Microsoft 365 on iOS. By installing the app, you agree to these terms and conditions: http://aka.ms/eula
Written user reviews are not shown here. Check current App Store reviews >
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: Steep learning curve for new users
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Performance issues with large files
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Complex sharing options
Validate with people who use this workflow before building.
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.