App Overview

Corner Speed icon

Corner Speed

Kuang Yi Wei · Navigation

Corner Speed - Your Ultimate Motorcycle Riding Companion

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
2.4
5 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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A product spec, screen plans, and build steps for your coding agent.

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What's included18 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.

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.

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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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Corner Speed: 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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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 for live traffic data overlay.

Assumption to check: Inadequate real-time traffic updates

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to customize alert sounds and notifications.

Assumption to check: Limited customization for speed alerts

Validate with people who use this workflow before building.

Hypothesis 3

Focus on a cleaner, more modern design with user feedback.

Assumption to check: Poor user interface and experience

Validate with people who use this workflow before building.

Hypothesis 4

Integrate a reliable speed limit API for accurate updates.

Assumption to check: Inaccurate speed limit data

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

Corner Speed - Your Ultimate Motorcycle Riding Companion Perfect Weather for a Ride? Corner Speed is a professional motorcycle riding tracker designed for passionate riders. Whether you're a canyon carver, daily commuter, or someone looking to improve your riding skills, Corner Speed is your perfect riding companion. Gear up, launch Corner Speed, and make every ride more exciting. Real-time Dashboard - Track Every Moment The app features a beautifully designed real-time dashboard with intuitive circular progress indicators displaying your current speed and lean angle. The dashboard shows "Last Corner" statistics including lean angle and average corner speed, allowing you to review your performance during straightaways. Support for both landscape and portrait modes ensures clear visibility regardless of your phone mounting setup. The pure black background design remains readable in bright sunlight, while dark mode support reduces screen glare during night rides. Precise Lean Angle Measurement - Push Your Limits Safely Corner Speed utilizes your iPhone's built-in gyroscope and accelerometer, sampling at a high frequency of 0.25 seconds to accurately calculate your motorcycle's lean angle through corners. This feature helps you objectively understand your riding limits and continuously improve within safe boundaries. The system automatically records key metrics for each ride including maximum lean angle and average speed, helping you analyze your riding performance. Mid-Ride Refueling - Keep Your Journey Going The new Travel tab helps you find what you need without breaking your ride. Once you start, the app pinpoints your location on a sleek night-mode map and lists nearby gas stations and convenience stores. Each spot shows live direction guidance, straight-line distance, estimated arrival time, and opening status, so you can pick the closest, most convenient stop at a glance. Tap once to open navigation in Apple Maps or Google Maps, and the app remembers your preferred app for next time. The interface carries over the dashboard's carbon-fiber racing style, with a fluorescent-orange metal dial and large distance figures that stay readable on the move. Even in remote mountain areas with poor signal, it falls back to previously cached data so you can still find supplies offline. Complete Route Recording - Relive Every Journey Integrated with map services to automatically record your riding route. Each ride saves complete GPS coordinates, timestamps, speed variations, and lean angle data. You can review all past rides in the records page, visualize routes on the map, and relive every exciting cornering moment. Cloud Sync - Share Your Routes Support for cloud synchronization allows you to upload all riding records to cornerspeed.com and share your routes with riders worldwide. Local Storage - Works Offline Using local database technology, the app continues to record all data even in remote mountain areas without network coverage. Once you regain network connection, you can sync records to the cloud, ensuring data integrity. Multi-language Support - Serving Riders Worldwide Available in Traditional Chinese, Simplified Chinese, and English interfaces, making it accessible to riders from different regions. Corner Speed is more than just a tracking tool - it's your best assistant for improving riding technique and enjoying the thrill of riding. Download Corner Speed now and start recording your exciting rides! Important Usage Notes • Use a sturdy phone mount. When possible, mount it on the bike frame rather than handlebars, as handlebar mounting may affect lean angle measurement accuracy • Ride safe - only check the dashboard when road conditions permit. Corner Speed records all information for you to review on the map after your ride New features are continuously being developed. For questions and suggestions, please email [email protected]. We greatly appreciate feedback and reviews from fellow riders.

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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
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.