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 #1 golf GPS app and rangefinder trusted by 5M+ golfers worldwide
Free · 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.
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 Hole19: Golf GPS Range Finder: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
The #1 golf GPS app and rangefinder trusted by 5M+ golfers worldwide. Hole19 delivers pinpoint accurate yardages, AI-powered shot tracking, a digital scorecard, and a handicap tracker, all on your iPhone and Apple Watch. Whether you're chasing your first sub-90 or defending single digits, Hole19 has the tools to lower your score. Coverage of 42,000+ courses in 201 countries, a full-featured Apple Watch integration, and features built with 10+ years of real golfer feedback. Golfers who track their shots with Hole19 Premium save an average of 3 shots per round. Try Premium free for 14 days. FREE FEATURES: - Golf GPS Rangefinder: Pinpoint distances to the front, center, and back of the green plus every hazard and target across 42,000+ courses. - Digital Scorecard: Scores, putts, fairways hit, and GIR tracked on your phone or Apple Watch. - Course Preview: Explore every hole layout and hazard before you tee off. - Apple Watch GPS: Front, center, back distances on your wrist. Phone-free play. - LivePlay: Organize rounds, track live leaderboards, and share the round in real time. - Golf Social Network: Connect with golfers worldwide, share scores and course photos. - Siri Voice Commands (iOS): Start a round hands-free. - Monthly Challenges: Compete for prizes. PREMIUM FEATURES: - Plays Like Distances: Real yardages adjusted for elevation. - Shot Tracker: Track every shot and see exactly where it landed. - Club Recommendation: Personalized club suggestions based on your actual distances. - Augmented Reality (iOS): Distances and directions overlaid on your camera view. - Handicap Calculator: Global-standard handicap index with improvement tracking. - Club & Overall Stats: Driving accuracy, greens in regulation, short game, putting. - Apple Watch Scoring & Maps: Full score input and flyover maps on your wrist. - Game Modes: Stroke Play, Stableford and Side Games free; Match Play and team formats Premium. - Shot Dispersion Tool: See where your shots are likely to land and pick smarter aim points. - Auto-Change Hole: The app advances automatically as you move. - Distance Arcs: Free in Course Preview only; Premium in-round. - Notes & Highlights: Course strategy notes plus your career highlights. - Ad-free experience. INTELLIGENCE (Hole19's AI tier): - Otto AI: Your personal AI caddie. Unlimited AI round reports that tell you exactly where you're losing strokes and what to work on. - Auto Shot Detection: Track every shot with one tap after the round. - Strokes Gained Analysis: Pro-level stats that reveal which part of your game is costing you the most. - Handicap Benchmark: Compare your game to golfers at your exact handicap level. - CORE Golf included (iOS Only): 100+ drills and 15+ practice plans to structure your practice. Payment will be charged to your Apple Account upon confirmation of purchase. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Subscriptions may be managed by you and auto-renewal may be turned off by going to your Account Settings. If you upgrade to Premium or Intelligence during your free trial any remaining time left on your trial will be forfeited. NOTES: - [email protected] - Technical support - [email protected] - Mapping requests - [email protected] - Partnerships - Premium and Intelligence features are available via in-app purchase - The app is optimized for iOS 18.0+ on iPhone SE (2nd generation) and newer - Hole19 for Apple Watch requires watchOS 10 or later - Hole19 is not optimized for iPad - Continued use of GPS running in the background can dramatically decrease battery life - Family Sharing is not supported - Privacy Policy - https://www.hole19golf.com/terms/privacy-policy - Terms of Use - https://www.hole19golf.com/terms
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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 course database and user-generated content
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Subscription model may deter users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: GPS accuracy issues in certain areas
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Complexity in tracking scores for multiple players
Validate with people who use this workflow before building.
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.