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.
** Sequel to Best of 2014 Award Winner ** — Apple
$14.99 · 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 Windy Pro ~ Cozy White Noise: map the core Health & Fitness 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 sound options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Requires app purchase to access full features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No offline access to purchased sounds
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of community features
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.
** Sequel to Best of 2014 Award Winner ** — Apple ** Sequel to Leap into Leap Year Winner ** — Apple Windy Pro is a premium natural white noise app for better Sleep, Relaxation and Focus. Fall asleep faster, mask annoying noises, and focus on your work with high-quality wind ambience recordings from nature in binaural 3D, paired with noise shape technology. Discover why over one million people trust Windy to improve their sleep, focus and relaxation. Invest in yourself with Windy Pro and experience Taptanium™ certified nature audio with no human-made noise intrusions. Experience pure, clean wind soundscapes with infinite playback capability that have the power to mask unwanted noises around you. Windy Pro is your personal piece of calming nature in your pocket, always ready to help you sleep, relax or focus. Windy Pro does NOT offer subscriptions. You pay only once — everything is included, forever. WINDY PRO FEATURES NEW IN WINDY PRO * New scene: Windy Bay * Noise shape technology helps you mask unwanted noise more effectively * Refreshed soundscapes WHITE NOISE & NATURE SOUNDS * Immerse yourself in a variety of wind scenes, infinitely and seamlessly looped * Experience Taptanium™ neural 3D audio™ for an incredibly immersive sound experience * Enjoy crystal clear nature audio with no interruptions * Practice presence and attention by focusing on the detailed and clear 3D soundscapes ADVANCED CONTROL * Mix and match sounds like rain on a tent, a gurgling stream, crickets, and birds * Use adjustable fade-out and sleep timer for a seamless transition to sleep * Blend in uplifting music specifically created for Windy Pro RELAXATION & FOCUS Choose and customize a calming environment to sleep better, focus on your tasks and drown out unwanted noise. Improve your productivity with focused wind sounds in the background. MORE FEATURES * Unlimited playback time with full background audio support, mixing with other apps * Universal app for iPhone and iPad * No in-app purchases, no subscriptions * Remote Control support! Enable/Disable in iOS Settings under "Windy Pro" Join over one million people who have improved their sleep and productivity. Experience restful nights and productive days. PRAISE FOR WINDY PRO "Wind moves from left to right, right to left, hovers overhead. It's cool that you can often hear what the wind is carrying, too." — Dave Caolo, TUAW "Windy is what a pop-up book would look like in the digital age if you were to combine it with IMAX audio." — Gannon Burgett, The Industry "Windy’s a beautiful thing, with some real talented artists and technologists working behind the scenes here." — Paul Sawers, The Next Web "I absolutely love the wind sounds." — Christine Chan, AppAdvice Over one million people love Windy, and Windy Pro is even better! Try it now and sleep great tonight! ≈ Questions? ≈ [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.