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.
Sleep great and boost your productivity with Sunny on the beach! I've created Sunny because I wanted to sleep better, and it works! Get Sunny now, sleep great tonight!
$7.99 · 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 Sunny Sea Ocean Sleep Sounds: 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 variety compared to other apps
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No customizable sleep timers
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchase confusion
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.
Sleep great and boost your productivity with Sunny on the beach! I've created Sunny because I wanted to sleep better, and it works! Get Sunny now, sleep great tonight! Let the most beautiful beach and ocean soundscapes lull you to sleep quickly. Explore a great variety of sceneries and discover your favorite. Sunny features Taptanium™ certified nature audio, which means that all nature audio within is crystal clear, exhibiting absolutely zero human made noise intrusions. No people, no airplanes, no trucks whatsoever. Just wonderful nature with infinite playback. Taptanium™ certified nature audio comes from the most pristine sources such as Hawaii and has been mastered to perfection with the highest attainable level of attention to detail, spending many of hours of analysis for every minute of audio while utilizing artificial intelligence to detect even the most distant human-made noise intrusions that humans are nearly incapable of recognizing under normal circumstances. Only the purest and highest quality nature sounds in the world can attain this certification. Experience Taptanium™ neural 3D audio™. If you put on headphones, Sunny creates an incredible sense of immersion. The nature and water plays all around you, not just on your ears. This is called externalization, and it's encoded in a way that your brain naturally decodes. As if you were there. Mix and match multiple sounds to your liking by adding some extra rain on a tent or sea birds around you. Get the great sleep and productivity you deserve. On top, Sunny features relaxing music composed and conducted specifically for Sunny in Hollywood. Sunny comes from the creator of Thunderspace, Windy, Away, Flowing and Rainy. Join over 5 million people who use them to sleep better, to meditate, to focus on their work or studies, or to help their kids sleep. Curious about Sunny? Buy it now, sleep great tonight, and spare yourself expensive in-app purchases and subscription fees because in Sunny everything is already included. No extra costs. Sunny includes so many things: • A great variety of beaches and bays, infinitely looped • Unlimited playback time • Taptanium™ neural 3D audio™ (incredibly immersive) • Taptanium™ certified quality nature audio • Adjustable fade-out and sleep timer • Full background audio support • Universal app for iPhone and iPad • No in-app purchases • No subscription • Beautiful audiovisual experience • Track your relax sessions in a beautiful graph. Sunny does not transmit your data anywhere. • Integrates with Health app to overlay your average heart rate over a relax session chart, so you can see the correlation between your relaxation sessions and your average heart rate (iPhone only / Sunny does not measure your heart rate). • NEW: Remote Control support! Enable/Disable in iOS Settings under "Sunny". • NEW: Optimized for iPhone X, XR, XS & XS Max, 11, 11 Pro, 11 Pro Max & iPad Pro! Frequently featured by Apple and the press. Give Sunny a try, sleep great tonight! ≈ Questions? ≈ Tweet @taptanium, email franz taptanium com or send an email through the in-app contact support page. Happy to hear from you. Made with lots of love in Germany.
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.