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.
Flash loop turns your ideas into short, narrated micro-stories paired with hypnotic, fullscreen visuals
$2.99 · 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 Flash loop: 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: Limited editing features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Low user rating due to bugs
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited sharing options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inconsistent performance on older devices
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.
Flash loop turns your ideas into short, narrated micro-stories paired with hypnotic, fullscreen visuals. Each piece is timed to the second: narration, captions, and video start and stop together for a clean, professional finish. How it works Enter a prompt (for example: “a message from a lonely satellite”). Choose a duration (10s, 15s, or 30s) and a narrator voice. Generate your story. When it’s ready, preview it instantly. Save to Photos with captions baked into the video what you see is exactly what exports. Why creators love it: Cinematic narration – Natural pacing with expressive delivery for a non-robotic sound. Perfect sync – Video begins at a smart, random start point and ends precisely when the story ends. Full-screen visuals – Edge-to-edge playback with smooth fades and modern presentation. Built-in captions – Optional on-screen captions timed per line; included in exports. Multiple voices – Preview voices instantly and pick the one that fits your mood. Share-ready exports – High-quality MP4 files saved straight to your camera roll. Designed to feel familiar. A clean, fluent interface keeps you moving: clear steps, thoughtful defaults, a “Done” button on the keyboard, and progress screens while your story is generating. • Weekly Subscription • Payment is charged to your iTunes account upon confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the current period ends. • Renewal charge will be applied within 24 hours prior to the end of the current period. • Manage your subscription in your Account Settings. Terms of Use: https://www.whatsgoodapps.com/terms-and-pp/ Privacy Policy: https://www.whatsgoodapps.com/terms-and-pp/ For support or feedback, please contact: [email protected]
Written user reviews are not shown here. Check current App Store reviews >
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.