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 app includes the following ear training exercises:
$4.99 · 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.
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Combine features and design from your favorite apps.
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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 Toned Ear: map the core Education 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 exercise variety leading to user boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor user interface and navigation can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of feedback on performance can hinder learning.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High subscription cost for premium 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.
This app includes the following ear training exercises: Intervals: In this exercise, you will hear two notes in sequence. Your goal is to identify the interval between the two notes. Chords: In this exercise, you will hear a chord. Your goal is to identify the type of chord that you heard. Scales: In this exercise, you will hear a scale. Your goal is to identify the name of the scale that you heard. Chord Progressions: In this exercise, you will hear a chord progression. Your goal is to identify each chord that you heard. Perfect Pitch: In this exercise, you will hear a single note. Your goal is to identify the name of the note. Scale Degrees (functional): In this exercise, you will hear a short chord progression followed by a single note. You must identify the scale degree of that note relative to the key established by the chord progression. This is also known as "functional ear training". Intervals in Context (functional): This exercise combines the "Intervals" and "Scale Degrees" exercises. In this exercise, you will hear a short chord progression followed by two notes. You must identify the major scale degrees of the two notes relative to the key established by the chord progression as well as the interval between the two notes. Melodic Dictation: In this exercise, you will hear a short chord progression followed by a short melody. You must identify the major scale degree of each note in the melody.
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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.