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.
Turn your device into a GPS speedometer and intelligent trip companion
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 Digital Speed GPS Speedometer: map the core Navigation 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 customization options for speed display
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent GPS accuracy
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No offline mode
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Ads disrupt user experience
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.
Turn your device into a GPS speedometer and intelligent trip companion. Whether driving, cycling, boating, or exploring on foot, track every detail of your journey with style. SPEED & NAVIGATION: - GPS speed tracking in MPH, KM/H, or knots - Real-time trip computer: speed, distance, altitude, heading, duration - Live position tracking with interactive map view - Trip recording with detailed route mapping - Save unlimited journeys and review them anytime SMART DISPLAY MODES: Heads-Up Display (HUD): - Mirror your speed onto the windshield - Display vital stats while driving - Suitable for nighttime use with auto-brightness adjustment Picture in Picture Mode (PRO): - Floating speedometer overlay works with any app - Monitor your speed while using navigation or music apps - Fully resizable and repositionable window INTELLIGENT ALERTS: Speed Limit Detection (PRO): - Automatic speed limit recognition for your current road - Smart alerts when approaching or exceeding limits - Global coverage with intelligent road inference - Customizable warning thresholds and notification sounds Speed Camera Alerts (PRO): - Alerts for fixed, red light, combined, and section control cameras - Cameras shown on the map as you drive - On-screen banner when approaching a camera - Live average speed and progress inside section control zones - Choose voice announcements, alert sounds, or both - Powered by the SCDB.info database - Coverage across Europe, UK, USA, Australia, and Brazil Performance Tracking: - G-Force acceleration and braking analysis - Enhanced altitude tracking with pressure sensors - Moving vs. stationary time breakdowns - Maximum and average speed calculations HANDS-FREE & LIVE ACTIVITY: - Start, stop, and control recording with Siri, Shortcuts, and Control Center (iOS 18) - Live speed on your Lock Screen and Dynamic Island ENTERTAINMENT INTEGRATION: - Built-in Apple Music controls and display - Current song information without app switching - Seamless music playback during your drives PERSONALIZATION OPTIONS: - Multiple color themes to match your style - Flexible unit system: KM/H, MPH, or nautical knots - Various display layouts and orientations - Dark mode and auto-brightness support - Adjustable speedometer scales and ranges - Left or right-handed speedometer positioning - Portrait and landscape with rotation lock PRO SUBSCRIPTION FEATURES: - Full trip details with route maps and statistics - Trip statistics with personal records and streaks - GPX route export for sharing and backup - Road-based speed limit detection with alerts - Speed camera alerts with voice and sound - Picture in Picture floating speedometer - Weather forecasts and current conditions - Premium color themes and custom app icons FREE FEATURES: - Core speedometer and basic trip computer - Standard HUD mode - Map view with position tracking - Unlimited trip saving and recording - Essential customization options SUBSCRIPTION DETAILS: - Free download with core features always available - Optional PRO subscription for premium capabilities - Cancel anytime through App Store account settings - Payment charged to Apple ID upon purchase confirmation - Auto-renewal unless cancelled 24 hours before period ends - Manage subscriptions via your App Store account IMPORTANT REQUIREMENTS: - GPS/Location Services required for speed tracking - Not compatible with WiFi-only iPad models - GPS accuracy depends on signal strength and environment - Best performance in open areas with clear sky visibility - Continuous GPS usage affects battery life - Never operate device while driving - safety first! Rate and Review: Your feedback helps us improve and develop new features. Share your experience on the App Store! Terms of Use: https://speedtracker.app/terms
Written user reviews are not shown here. Check current App Store reviews >
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.