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.
App Overview
Link to Windows
You love your phone
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.0
15,872 ratings · Top 30%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Link to Windows: 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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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Improve connectivity and provide support for more Android devices.
Assumption to check: Limited device compatibility and connection issues.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance notification reliability with better syncing.
Assumption to check: Notifications can be delayed or missed.
Validate with people who use this workflow before building.
Hypothesis 3
Add advanced file management options like tagging and search.
Assumption to check: Limited file management features.
Validate with people who use this workflow before building.
Hypothesis 4
Redesign onboarding process for better user education.
Assumption to check: User interface can be confusing for first-time users.
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
You love your phone. So does your PC. Get instant access to everything you love on your phone, right from your PC. To get started, connect your iPhone with the Phone Link Feature on your Windows PC. Enjoy these Phone Link features on your PC: • Make and receive calls • Manage your phone's notifications • Read and reply to text messages • View your phone contacts • Share files between your phone and PC Phone Link for iOS requires iPhone running iOS 16 or higher, and a PC with Bluetooth Low Energy (BLE) support running Windows 10 (with the May 2019 Update or later) or Windows 11. Not available for iPad (iPadOS) or MacOS. By installing this app, you agree to the Microsoft Terms of Use https://go.microsoft.com/fwlink/?LinkID=246338 and Privacy Statement https://go.microsoft.com/fwlink/?LinkID=248686
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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BUILD KIT DIFFICULTY
Advanced
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.
