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
Background Videos 4K
NOW also on your iPhone or iPad
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
3 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 included15 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 Background Videos 4K: 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
Offer a wider range of high-quality videos with regular updates.
Assumption to check: Limited content variety and quality in the free version
Validate with people who use this workflow before building.
Hypothesis 2
Implement a cleaner, more organized layout with better navigation.
Assumption to check: User interface can be cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Focus on optimizing video loading and playback performance.
Assumption to check: Inconsistent performance during video playback
Validate with people who use this workflow before building.
Hypothesis 4
Introduce themes or personalization features to enhance user engagement.
Assumption to check: Lack of customization options for users
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
NOW also on your iPhone or iPad. Take the Screensaver to any TV with Apple TV or Chromecast. More than 20 different screensavers Relax the view with this fantastic 4K Screensaver! 50% launch offer. Take advantage today and download it. Do you want to put a screensaver on your TV? or perhaps put it in the background for your phone, iPad or Apple TV ??, now with Screensaver 4K is possible. Download this application and enjoy with your partner or friends the relaxing images in 4K or HD of a great screensaver for Apple TV, iPhone or iPad. Main features: Playback • 4K and HD videos • Endless loop playback • Shuffle mode • Background playback while using other apps • Sleep timer: video automatically stops when you fall asleep • Playback speed (0.25x to 2x) Large Screen • Compatible with Apple TV via AirPlay • Compatible with Chromecast for HD viewing on your TV Customization • 5 visual effects: snow, powder snow, rain, sparkles, and confetti • 4 display layouts: list, grid, single circle, or double circle • Bookmark your favorite videos for quick access • Dark mode support • Clock: display the clock on screen (digital/analog) • Appointments: display text on screen • Calendar: display upcoming calendar events Content • Over 20 different content options • New content added regularly Download it now! Privacy Policy: http://kissappsl.com/pages/privacy-policy/ Terms of Use (EULA): http://kissappsl.com/terms-of-use/
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
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.
