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.
the background all day and night.
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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 TinniCalm - Tinnitus Relief: 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 and customization
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No user community or sharing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Subscription model may deter users
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.
the background all day and night. Living with tinnitus means constant noise that only you can hear. TinniCalm gives you control over your sound environment so you can focus, relax, and sleep without the distraction. SOUND MIXER Blend up to 4 sounds simultaneously with independent volume controls. Combine white noise with rain, layer ocean waves over brown noise, or create your own custom mix. Save your favorite combinations as presets and switch between them instantly. SOUND LIBRARY Choose from a curated library of masking sounds: - White noise, pink noise, brown noise - Rain, ocean, river, wind, forest, birds - Fan, singing bowl, and ambient tones - Custom frequency tones for targeted masking FREQUENCY FINDER Identify your tinnitus pitch with a built-in frequency tool. Sweep through frequencies to find the one that matches your tinnitus, then use it with Notch Therapy for personalized relief. NOTCH THERAPY Notch Therapy removes your specific tinnitus frequency from the audio you hear. Over time, this approach may help reduce the perception of your tinnitus. Set your frequency once and TinniCalm applies the notch automatically. BACKGROUND PLAYBACK TinniCalm keeps playing when you switch apps, lock your screen, or put your phone away. Use it while working, reading, or sleeping without keeping your phone open. SLEEP TIMER Set a duration and let TinniCalm fade out gradually after you fall asleep. Choose from presets or set a custom time. Wake up naturally without sound still playing. LEARN 7 in-app articles covering tinnitus basics, sound therapy, sleep strategies, daily management, frequencies, and when to see a doctor. Built-in references so you can build better habits around your tinnitus care. FREE AND PREMIUM Core sounds and mixing are free. Unlock the full sound library, Frequency Finder, Notch Therapy, and 4-sound mixing with a one-time premium purchase. No subscriptions. TinniCalm is not a medical device and does not provide medical advice, diagnosis, or treatment. Always use a comfortable listening volume and consult a qualified healthcare professional for medical concerns.
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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.