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
VIZIO | WatchFree+
VIZIO Device Control and WatchFree+ FREE Live TV
Free · In-app purchases
OVERALL US RANK
#71
Free · all categories
REVENUE (Est)
$192K/mo
$107K - $277K
RATING
★ 4.6
68,173 ratings · Top 15%
Evidence scope: #71 is the current overall US Free chart position. 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 VIZIO | WatchFree+: map the core Entertainment 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
Focus on expanding content library with exclusive options.
Assumption to check: Limited content selection compared to paid services
Validate with people who use this workflow before building.
Hypothesis 2
Implement an ad-free subscription tier for better user experience.
Assumption to check: Frequent ads during streaming
Validate with people who use this workflow before building.
Hypothesis 3
Simplify navigation and reduce the number of visible options for clarity.
Assumption to check: UI can be cluttered with too many features
Validate with people who use this workflow before building.
Hypothesis 4
Enhance adaptive bitrate streaming for a smoother experience.
Assumption to check: Inconsistent streaming quality
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
VIZIO Device Control and WatchFree+ FREE Live TV Stream 300+ free live channels anywhere—no VIZIO TV required! Plus, control your VIZIO devices and discover entertainment, all through the VIZIO Mobile app. WATCHFREE+ MOBILE: Free live channels, anytime, anywhere. • Stream 300+ Free Live Channels: Watch news, sports, movies, and shows on your mobile device —no VIZIO TV needed • Personalize Your Experience: Create favorite channels lists and get personalized recommendations • Stay Connected: Keep up with local sports, news, and entertainment on the go • Easy to Start: Just download the app and create a free VIZIO account to start watching • Smart Navigation: Find what you want faster with the category jump feature • Pick Up Where You Left Off: Seamlessly switch between devices when you start watching on a VIZIO TV TV and ENTERTAINMENT CONTROL: Transform your phone into a powerful entertainment hub. • Universal Search: Find what to watch across streaming services in one place • Smart Recommendations: Discover new shows and movies based on your interests • Voice Control: Launch apps and find content hands-free • Save Time. Stream More: Organize apps and manage subscriptions in one location • Share & Connect: Cast photos and videos to your TV with VIZIOgram SOUNDBAR CONTROL: Fine-tune your audio experience right from your phone. • Quick Audio Adjustments: Customize volume, bass, and treble with easy controls • Preset Sound Modes: Optimize audio for movies, shows, music, and more • Enhanced Listening: Enable features like ClearDialog and Night Mode for the perfect sound ——————————————————————— VIZIO Crave Speakers cannot output audio from TVs/displays or be connected as an additional channel to an existing sound bar or sound system. Additional supported SmartCast or Chromecast-enabled audio products are required (not included) for Multi-Room feature. Streaming different songs to different speakers at the same time is not supported when using a single app running on a single mobile device. To stream a different song to different speakers at the same time, you’ll need to stream from a different app or a separate mobile device. The applications and content pictured herein or described on this page may only be available in certain countries and languages, may require additional fees or subscription charges, and may be subject to future updates, modifications, interruption and/or discontinuation of service without notice. VIZIO has no control over third party applications or content and assumes no responsibility for the availability or interruption of such applications or content. Additional third-party terms, conditions and restrictions apply. High-speed/broadband Internet service and access equipment are required and are not provided by VIZIO. Not all Google Cast-enabled apps are integrated with VIZIO SmartCast and may require additional steps to cast. For help, please visit our Customer Help Center: support.vizio.com Terms of Use: https://www.vizio.com/en/terms/account-terms Privacy Policy: https://www.vizio.com/en/terms/privacy-policy
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
Expert
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.
