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
CBS
With the CBS app you can watch the latest episodes of your favorite CBS shows for free at your convenience, no log-in required
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
71,452 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 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 CBS: 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
Implement a VPN feature for region selection.
Assumption to check: Limited content availability in some regions
Validate with people who use this workflow before building.
Hypothesis 2
Offer an ad-free subscription tier.
Assumption to check: Frequent ads during streaming
Validate with people who use this workflow before building.
Hypothesis 3
Use adaptive bitrate streaming for better quality.
Assumption to check: Inconsistent playback quality
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the layout and enhance navigation.
Assumption to check: User interface can be cluttered
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
With the CBS app you can watch the latest episodes of your favorite CBS shows for free at your convenience, no log-in required. You also have the option to sign in with your cable provider to access full seasons and stream Live TV from your local CBS station including live news, sports, entertainment, and can’t-miss live events like NFL on CBS, The Golden Globes, NCAA March Madness, and more. All for free, no additional subscription or monthly fee required. App Features: • Stream full episodes for free • Watch your favorite shows anywhere, on any device • Latest episodes available for next-day streaming* • Option to sign in with your cable provider to stream live TV and access full seasons of CBS shows *Live TV includes commercials and select shows have promotional interruptions.Content availability subject to change. Please note use of the CBS app is limited to the United States. CBS promotional offers for new subscribers only. Live TV subject to availability. Prices shown are in U.S. dollars. Other restrictions apply. Please note: This app features Nielsen’s proprietary measurement software which will allow you to contribute to market research, like Nielsen’s TV Ratings. Please visit http://www.nielsen.com/digitalprivacy for more information. CBS App Terms of Use: https://www.viacomcbs.legal/us/en/cbsi/terms-of-use Paramount Privacy Policy: https://privacy.paramount.com/policy Minors' Privacy Policy: https://privacy.paramount.com/childrens Do Not Sell My Personal Information: https://www.viacomcbsprivacy.com/donotsell
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
React Navigation
Axios
Zustand
Expo AV
React Native Async Storage
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.
