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
VideoMate - Casting for Safari
VideoMate is a Safari extension that allows your play videos to your TV or locally.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
6 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/
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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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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 VideoMate - Casting for Safari: map the core Utilities 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
Include support for more video formats and sources.
Assumption to check: Limited casting options for certain video types
Validate with people who use this workflow before building.
Hypothesis 2
Implement clipboard integration to allow users to easily paste video URLs.
Assumption to check: Repetitive URL entry for casting
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to save favorite URLs and manage casting preferences.
Assumption to check: Lack of personalized settings
Validate with people who use this workflow before building.
Hypothesis 4
Enhance error handling and provide tips for troubleshooting connectivity.
Assumption to check: Occasional connectivity issues
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
VideoMate is a Safari extension that allows your play videos to your TV or locally. Built from the ground up with the goal of creating a desktop like experience for all users. To start using the extension simply enable the extension by going to the device settings > Safari > Extensions > and set VideoMate to "On". Then when you visit a webpage with a video trigger the VideoMate extension. • CAST Play your web video on your TV • SPEED CONTROL Easily control playback speed of your videos from 0.25 - 5.0x. • SEEK Ease to use seek bar makes finding the exact spot easy. Use the "+" and "-" seek buttons to slow seek at 0.5 second interval. • PLAYBACK CONTROLS Play/Pause, Skip forward or backwards, mute/unmute everything is easy now with VideoMate • PIP Picture-in-picture is now possible on video with just one tap Download and see what everyone is talking about! Satisfying you our customer is our one priority. Share you feedback, report bug, feature request. Just email us at [email protected] Note: DRM protected media cannot be played. Payment and automatic renewal terms: -VideoMate subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period -Your account will be charged for renewal within 24 hours prior to the end of the current period -Subscriptions may be managed by you in your account and auto-renewal may be turned off by going to your account settings after purchase -VideoMate Privacy Policy: http://www.jcltravels.co.uk/privacy-policy.html -VideoMate Terms of use: http://www.jcltravels.co.uk/terms-of-use.html
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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
React Native
Expo
axios
react-navigation
react-native-async-storage
expo-clipboard
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.
