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.
Your iPhone storage is full — and videos are usually the biggest culprit
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Large Video Finder: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Users often find it difficult to manage large video files effectively.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Searching for videos can be slow or inefficient.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited visibility into video details before playback.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchase processes can be cumbersome.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Your iPhone storage is full — and videos are usually the biggest culprit. But which ones? Apple’s Photos app doesn’t let you sort by file size. This app does. Large Video Finder scans your entire photo library and instantly shows you every video, ranked from largest to smallest. One glance tells you exactly what’s eating up your storage. WHAT YOU CAN DO: • See every video’s file size, duration, resolution, and date at a glance • Sort by size, date, or duration — ascending or descending • Set a minimum file size filter to focus on the biggest offenders • Protect your favorite videos from accidentally showing up in the list • Select and delete multiple videos at once with batch delete • Swipe to quickly remove individual videos • Watch any video before deciding — built-in player included • Pull to refresh after changes to your library DESIGNED FOR IPHONE AND IPAD The interface adapts beautifully to any screen. On iPad, enjoy a split view with the video list on one side and the player on the other. PRIVACY FIRST Everything happens on your device. No data is uploaded, no accounts needed, no tracking. Your videos stay yours. LOCALIZED FOR THE WORLD Available in English, German, French, Spanish, Italian, Portuguese, Russian, Chinese, Japanese, and Korean. All dates, sizes, and units automatically adapt to your device’s regional settings. Reclaim your storage in seconds — not minutes. No more scrolling through thousands of photos trying to guess which video is taking up 2 GB. Just open the app, spot the biggest files, and decide what stays and what goes.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.