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
Screen Mirroring - TV Cast Air
Screen Mirroring Z enables users to mirror their phone's screen to any smart TV wirelessly and in real-time without any delays
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.5
4,035 ratings · Top 50%
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 included18 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 Screen Mirroring - TV Cast Air: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Screen Mirroring Z enables users to mirror their phone's screen to any smart TV wirelessly and in real-time without any delays. The app is ideal for making presentations, watching movies, or playing games on your TV. It supports TVs with web browsers and those that support the following discovery protocols: DLNA, DIAL, Chromecast, and UDAP. It is important to note that Screen Mirroring Z is not affiliated with any TV brands such as Samsung, LG, Sony, Roku, and others. The app has several features, including the ability to mirror your phone's screen to your TV, cast photos and videos from your photo library to your TV, and mirror your phone's camera to your TV. To mirror your phone's screen to your TV, you need to connect your phone and your TV to the same WIFI network. Then, open the app and connect it to your TV. After that, tap the "Screen Mirroring" button and follow the instructions to start mirroring. Screen Mirroring Z offers a premium version that allows users to remove ads and unlock all features. You can choose to make a one-time payment or opt for a yearly or monthly subscription (with a 3-day free trial). Payment will be charged to your iTunes account at the confirmation of purchase, and subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. Subscriptions may be managed by the user, and any unused portion of a free trial period will be forfeited when the user purchases a subscription to that publication, where applicable. The app's privacy policy and terms of service can be found on the developer's website at https://evolly.app/privacy-policy/ and https://evolly.app/terms-of-service/, respectively.
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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
Implement a more robust device discovery and connection process.
Assumption to check: Users experience connectivity issues with certain devices.
Validate with people who use this workflow before building.
Hypothesis 2
Consider offering an ad-free premium version.
Assumption to check: The app has annoying ads that disrupt user experience.
Validate with people who use this workflow before building.
Hypothesis 3
Provide more features in the free version to enhance user retention.
Assumption to check: Limited functionality for free users after initial uses.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize the app for better performance on lower-end devices.
Assumption to check: Frequent crashes reported on older devices.
Validate with people who use this workflow before building.
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
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.
