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
Padel Score Counter
Padel Score Counter is most likely the most feature-rich App on the App Store for tracking Padel Scores.
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 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 Padel Score Counter: 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
Implement a feature to create and track multiple matches at once.
Assumption to check: Difficulty in tracking multiple matches simultaneously
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize player names, colors, and score formats.
Assumption to check: Limited user customization options
Validate with people who use this workflow before building.
Hypothesis 3
Introduce match statistics and historical performance tracking.
Assumption to check: Lack of statistics and analytics
Validate with people who use this workflow before building.
Hypothesis 4
Add functionality for users to share match results on social media.
Assumption to check: No 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
Padel Score Counter is most likely the most feature-rich App on the App Store for tracking Padel Scores. Requirement: Apple Watch. With Padel Score Counter you can: - See the serving order for each set, tie-break, and match tie-break. You can also reorder the serve order according in the beginning of each set according to the rules. - Enter player names for both double and single matches. You can do this on your Apple Watch or iPhone before the match starts. - Choose the match length (best of 1, 3 or 5 sets) and the scoring method (every point or games only). The app supports Golden Point and Star Point scoring systems. - Pause and resume the match at any time (due to rain etc.), or stop it before it’s finished (in case of injuries etc). - Record your pulse, energy, and match time for saving in the Activities and Fitness apps. - Use the iPhone companion app to view your previous matches and set up matches in advance for playing on your Apple Watch.
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.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
react-native-async-storage
React Navigation
TypeScript
BUILD KIT DIFFICULTY
Intermediate
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.
