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.
One of the best rated white noise machines on the market
$1.99 · 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 Sleep Bug Pro: 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 library compared to other apps
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No community features for sharing sounds
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of personalized recommendations
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No integration with health tracking apps
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.
One of the best rated white noise machines on the market. Superior in sound contents: 24 scenes, 83 different sound effects and more than 300 different sounds ensure that everyone will find an ambience matching their needs. Sleep Bug Pro is an ambient sound mixer that produces a variety of scenes and music with random sound effects. The built-in sound generator creates a realistic listening experience to help calm a busy mind and is perfect for adults, children, and babies who are having trouble sleeping. You can also use Sleep Bug Pro in the office to mask out distracting noises, improve concentration, and increase privacy. So don’t delay, try Sleep Bug Pro today. Improve your mind and improve your life, through sound! More than 3.500.000 users worldwide! With a rating average of 4.75/5.00 Sleep Bug Pro is one of the best rated white noise machines in the App Store. Try it out today! ------------------------------------- -- FEATURES -- - 24 High quality scenes each with multiple sound effects. - Play scenes in the background while using other apps. - High quality retina graphics. - Clock and date display. - Sleep timer. - Individual volume adjustment for each sound effect. - Accessibility support. - No ads! - GREAT USER SUPPORT! ------------------------------------ -- 24 SCENES -- Available for iPhone, iPod and iPad. Sleep Bug Pro includes the following scenes: Beach – With birds, ship horn, chimes and waves Music Box – With bells, birds, guitar and piano Zen – With hok, bamboo, drum, strings and chants (zen scape without voices) Zen Garden – With hok, bamboo, drum and strings River – With birds, insects, frogs, lightning and wind Forest – With birds, wolves, eagles, bird wings and music beats Jungle – With tigers, parrots, drums, monkeys and frogs Classical – With violins, cello, drums and solo violin Fire – With birds, burning wood, crickets, lightning, wind and owls Waterfall – With streams, trees and birds Weather – With lightning, rain and wind Lullaby - With birds, chimes, wind and waves Horror – With ghosts, screams, chains, doors and owls City – With bicycles, birds, motorbikes and cars Clock - With chimes, mechanical and pound Dreams – With bass, bells, pad loop, pads and organ Train – With carriages, horns and passing trains Sci-fi – With static noises, voices, flares, U.F.O’s and space wind Airport – With planes taking off, music and announcements Outback – With snakes, didgeridoo and chimes Winter – With ice cracking, walking in the snow, bells, music and pads White Noise – With pads, 528Hz noise, wind and waves Underwater – With sonar, whales and bubbles Dark Drone – With storms, aggressive additions & mellow additions ------------------------------------- -- CUSTOMER REVIEWS -- In love! - Absolutely love this app!! Use it every night!! Great app! Very soothing for baby and parents! Such a great app, simple and easy to use. I was snoring 5 minutes after buying it. Wonderful sound machine to relax, sleep, meditate or just unwind. Highly recommended. ------------------------------------- To learn more, check out our webpage at: http://www.sleepbug.com
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.