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.
White noise, rain, ocean waves and 38 more ambient sounds, mixed the way you like
$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 Noizio — focus, relax, sleep: 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 selection compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No offline mode for sounds
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases may be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of user engagement 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.
White noise, rain, ocean waves and 38 more ambient sounds, mixed the way you like. Noizio turns any place into a calm one: set a few sounds, balance the volumes and let it play for as long as you need — to focus at work, unwind in the evening or fall asleep faster. Buy it once and it's yours. No subscription, no ads, no account, no internet required. WHY NOIZIO • Your own mixtures. Turn on several sounds, balance each one with its own volume slider and save the result. Share a mixture with a friend or import theirs. • Sleep timer. Set it from 1 to 60 minutes or pick an exact time; the sound fades out gently and stops. The countdown stays accurate even while the app is in the background. • Plays in the background. Keep listening while you read, work or lock the screen. The lock screen and Control Center show what's playing. • Fits into your day. Pauses when you unplug your headphones, resumes after a phone call, and never interrupts music from other apps until you press play. • Seamless loops. You can't hear where a sound repeats — no clicks, no fades, no matter how long you listen. • Dark and light themes, or Auto to follow your system. A dark and a tinted app icon for your home screen. • Made for iPad too, with a two-column layout. Fully usable with VoiceOver. 41 SOUNDS INCLUDED Nature: Birds in Park, Tropical Birds, Night Owls, Frogs and Crickets, Farm, Summer Night, Sunny Day, Desert, Winter Wind, River Stream, Sea Waves, Blue Whales, Thunderstorm, October Rain, Campfire Places: City Street, Paris Cafe, Playground, Subway, Inside Train, Sailing Yacht, Ship Hull, Deep Space, Space Drone Things: Clock, Heartbeat, Keyboard Typing, Old Typewriter, Vinyl Cracks, Wind Chimes, Magical Chimes, Kitty Purr, Ghosty Noise: White Noise, Pink Noise, Brown Noise Tones: Alpha, Beta, Gamma, Delta and Theta Waves WHAT PEOPLE USE IT FOR • Focusing at work or while studying, and drowning out an open office or a noisy street • Falling asleep and staying asleep, at home or in a hotel room • Meditation, yoga and breathing exercises • Winding down after a long day • Masking tinnitus and other constant noises • A soft background for a baby's nap Noizio has been helping people focus and sleep since 2015. It is made by one developer, it stays small and quiet, and it does one thing well. noizioapp.com
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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.