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
Hyperduck
Quickly send a link from your iOS device to your Mac.
$5.00 · In-app purchases
PRICE
$5.00
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
61 ratings · Top 5%
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 included14 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Hyperduck: 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
Allow users to customize themes and layouts.
Assumption to check: Limited customization options for tasks and notes
Validate with people who use this workflow before building.
Hypothesis 2
Enable task sharing and collaboration with others.
Assumption to check: No collaboration features
Validate with people who use this workflow before building.
Hypothesis 3
Implement reminder notifications for due tasks.
Assumption to check: Lack of reminders for tasks
Validate with people who use this workflow before building.
Hypothesis 4
Add offline capability for task management.
Assumption to check: No offline access
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
Quickly send a link from your iOS device to your Mac. It provides a “Send to Mac” button in the share sheet of any app that provides a URL. For example, share a link from Safari on your iPhone or iPad and have it open in the default browser on your Mac. You can send a link even if your iOS device and/or Mac are offline. The link will be sent and received the next time the devices are online. The link will never be lost. The devices do not need to be on the same network. Your iOS device and Mac must have iCloud enabled and be signed into the same Apple ID account. My personal use-case is that I often discover cool stuff when I check Twitter on the go and I want to dig deeper into it later on my Mac. I have tried Instapaper, Pocket, Safari Reading List, iCloud Tabs, and more. The problem with them all is that I forget to check them. You can even use this app to trigger shortcuts on your Mac from your iOS device. See the website for more info. Sends to one Mac only. Install the macOS app on the single Mac you want to receive links on. If you install it on multiple Macs, iCloud may deliver a link to any of them, unpredictably. Note: Because of an iOS bug, you have to restart your device for the Shortcuts actions to show up. Note: Links will not be sent when low power mode is enabled as background syncing is disabled then. They will be sent the next time you open the app. ■ FAQ ‣ How is it better than AirDrop? - Works when your Mac is offline - Works when you are not on the same network as your Mac - Much faster - Opens links on your Mac in the background ‣ How is it better than iCloud Tabs? - Works in any app with a share sheet, not just Safari - Links are opened as tabs in your browser so you cannot miss them - No need to spend time looking for the link in a long list of links - Supports any browser on your Mac - You don't need to keep the tab open on your iOS device for it to be available on your Mac ‣ How is it better than Safari Reading List? - Links are opened right in your browser so you cannot miss them - No need to spend time looking for the link in a long list of links - Supports any browser on your Mac ‣ Can you support multiple Macs? No. I would like to keep the app simple. ■ Privacy The app uses iCloud syncing to securely send links from your iOS device to your Mac. The app developer will not see the links you share. The app does not collect any personal data and does not have any tracking. ■ Support You can contact me through the feedback button in the app.
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.
SUGGESTED BUILD STACK
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BUILD KIT DIFFICULTY
Intermediate
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.
