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
Bowlometer Premium
this bowls comparator app allows you to quickly and accurately determine the distance between bowls and the jack during a game
$6.99 · In-app purchases
PRICE
$6.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
3 ratings · Top 5%
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Bowlometer Premium: map the core Sports 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
Allow users to customize input formats and score types.
Assumption to check: Limited customization for score entry formats.
Validate with people who use this workflow before building.
Hypothesis 2
Integrate sharing features to share scores on social media.
Assumption to check: No social sharing options.
Validate with people who use this workflow before building.
Hypothesis 3
Implement user accounts with cloud backup for scores.
Assumption to check: User data not backed up or synced.
Validate with people who use this workflow before building.
Hypothesis 4
Provide detailed analytics and breakdowns of performance trends.
Assumption to check: Static statistics without detailed breakdowns.
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
this bowls comparator app allows you to quickly and accurately determine the distance between bowls and the jack during a game. suitable for lawn/indoor/short mat and carpet bowls. (warning : for petanque game, use our dedicated app booble). its interface is extremely simple and intuitive. 1. the embedded bubble level will automatically take the photo. 2. the user only has to touch the jack and then the bowl (wood) on the screen and the application will automatically – through advanced visual recognition technology, locate them and provide an accurate measured distance. 3. the order of ranking appears in real time. 4. if necessary, manual adjustments are possible. a zoom mode allows the user to validate the distance accurately. the bowls ranking will then automatically and dynamically adjust on screen. 5. this app allows the distance of up to 6 bowls to be simultaneously compared, determined and viewed on screen. available in french, english and spanish.
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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Axios
BUILD KIT DIFFICULTY
Starter
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.
