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.
This happy sound and music visualisation app converts sound frequencies into light/colour frequencies, in the most scientifically accurate visualisation process available on iOS
$0.99 · 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 Trippy Sound Colour Synesthesia: map the core Entertainment 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 audio tracks available for users.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Visualizations can be basic and repetitive.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase process might not be clear.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Low user rating suggests dissatisfaction with performance.
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.
This happy sound and music visualisation app converts sound frequencies into light/colour frequencies, in the most scientifically accurate visualisation process available on iOS. Will you find the aliens? Special Features: - Many geometries to explore the colour of your sounds - Mood light mode for music-responsive ambient light projection - Science page to learn more about our senses - Secret modes to unlock Instructions: 1: The visualisation will begin immediately. Speak to your device or play music. Select different geometries with 2 fingers. 2: Instructions are included in the app, you can access them any time with two fingers. The art of synesthesia: As trippy psychedelic synesthesia art, this app is an exploration of the relationship between our audio and visual senses, and the nature of our consciousness. The science of the senses: Your eyes contain 3 colour receptive cells, each having different sensitivities within the perceptible light spectrum. At the same time, your ears have different sensitivities over the audible spectrum. In addition, our eyes and ears re-adjust depending on the intensity of light and sound. Using real data on the nature of our sensory organs, the ambient sound spectrum picked up by your device's microphone is converted into light in real-time, so you can for the first time see the colour of your voice, music, nature and environment. This app forms part of a larger project of synesthesia and sound visualisation. For more information, apps and more details about the science involved, please visit the blog site: http://bensoundcolour.blogspot.jp/ If you would like to contribute music for a future release, or use this process in your own projects, live performances, VJ sets, or other, please send me an email.
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.