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.
App Overview
Hohner Mini-SqueezeBox
Hohner announces the introduction of a revolutionary new app for the iPhone: The Hohner Mini-SqueezeBox.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.2
28 ratings · Below Average
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Hohner Mini-SqueezeBox: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Offer a larger library of sounds and customization features for users.
Assumption to check: Limited sound selection and customization options
Validate with people who use this workflow before building.
Hypothesis 2
Implement audio quality settings and previews for each sound.
Assumption to check: Inconsistent audio quality across sounds
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the UI by categorizing sounds and settings for easier navigation.
Assumption to check: Cluttered UI with too many options
Validate with people who use this workflow before building.
Hypothesis 4
Integrate sharing options for users to share recordings on social media.
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Hohner announces the introduction of a revolutionary new app for the iPhone: The Hohner Mini-SqueezeBox. Mimicking the layout of Hohner's iconic Corona Classic diatonic accordion, this intuitive virtual accordion app feature a super responsive, three-row fingerboard that plays and sounds like the traditional instrument and now plays in all three of the most popular tones: EAD (Mi), FBbEb (Fa), and GCF (Sol). Simply touch in the bellows area to toggle between bellows push and pull, then play on the buttons. Touch the sliders icon at the upper right side of the screen to bring up the controls where you can select the tone (EAD, FBbEb, or GCF) and control the volume and reverb settings. The Hohner Mini-SqueezeBox app allow musicians to practice chord combinations, scales, and songs on-the-go. Headphones can be used for private practice, or the audio output of the virtual accordion can be amplified by plugging into computer speakers, or other sound enhancing devices. Players may select to have the note names displayed on the large white pearloid buttons. This app is ideal for the beginning student or professional musician who needs a simple carry-on companion to compliment his or her actual accordion. While not meant to be a replacement for a real accordion, the app is a convenient and easy tool for practicing, learning, or teaching.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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BUILD KIT DIFFICULTY
Advanced
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.
