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
Curve Tracker for Motorbike
Ever wondered how good your cornering is, when driving your motorbike?
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
5 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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.
JavaScript is required to complete mailbox verification.
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 Curve Tracker for Motorbike: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Provide advanced routing algorithms based on bike type.
Assumption to check: Limited route optimization options for specific bike types
Validate with people who use this workflow before building.
Hypothesis 2
Implement a social sharing feature for bikers.
Assumption to check: Lack of user-generated content or community features
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to download curves for offline use.
Assumption to check: Offline map functionality not fully developed
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a freemium model with essential features available for free.
Assumption to check: High price point for basic 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
Ever wondered how good your cornering is, when driving your motorbike? Curve Tracker is the App to improve your driving by analyzing and tracking your rides with the sensors of your smartphone. Curve Tracker was #5 in the German payed Navigation App Charts! Use this App to track your leaning angle while driving bike. It allows you to record a map with you route, that includes all the corners, including their speed, g-force and leaning angle changes while driving through the corner, with beautiful visualisations. Improve your driving skills and get a more secure driver. - See your leaning angle in curves - Track your ride on a map and export as .gpx - See a visual graph of all curves - See a curve in detail to analyze it - See a detailed overview of your limits - See trip 0-100km/h and 60-120km/h acceleration of a trip - iCloud support - Different Themes Please do not try to discover the maximum lean angle of your bike. This App should just be used as a guidance, not as a challenge. The developer is not responsible for any damage caused by the driver leaning too far into the curve or similar. Thanks to Dan Garri, Casey Horner, Ümit Yildirim, Taneli Lahtinen and Ryan Searle for making the images available on unsplash.com.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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 Navigation
Expo Location
Axios
Zustand
React Native Reanimated
Supabase
BUILD KIT DIFFICULTY
Advanced
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.
