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.
Measure - don't guess!
$8.99
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 LipSync Test Tool: map the core Utilities 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: Lack of user feedback mechanisms (e.g., scoring system)
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited audio file options for users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No tutorial for first-time users
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.
Measure - don't guess! Lip Sync is a precision tool for broadcast engineers, live production teams, and OB/streaming operators who need to verify and correct end-to-end AV sync across monitors, routers, encoders, and playout—before you go live or between segments. Key features • Visual & audio test pattern – On-screen markers, beeps and flash cues so lip offset is obvious in control rooms. • Customizable setup – Match FPS and tone frequency to your line standard or show format. • Real-time feedback – Clear Sound early / Video early indicators plus timecode-style readouts in portrait and landscape for quick checks at the desk or in the truck. • Event log – Recent sync-related events in one place for handover notes or troubleshooting during a show. • Latency measure mode – Point a second iPhone (camera + mic) at the program monitor for an end-to-end delay readout in milliseconds and frames. • QR anchor for long delays – Enable QR on the pattern device for frame-guided flash/beep pairing when latency exceeds 500 ms—accurate measurements on high-latency paths up to several seconds. • Live measurement mode – Keep measuring after the first result; the offset updates continuously until you tap Stop—ideal for watching drift during line checks or while routing changes settle. • Measurement history – Recent latency results saved in the Measure screen for quick comparison across runs, formats, or signal paths. • Interface – Dark, minimal UI for dimmed galleries, OB trucks, and fast orientation changes on iPhone and iPad. Why Lip Sync? In live shows and broadcast, sync drift shows up as complaints, replays, and lost trust. Lip Sync gives you a repeatable, end-to-end check you can run on any path—not guesswork in the heat of a production. Ideal for broadcast facilities, live sports and entertainment, houses of worship with IMAG, corporate live events, streaming ops, and systems integrators commissioning live signal chains.
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.