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
DirtTime: Dirtbike Maintenance
DirtTime is the ultimate dirt bike maintenance tracker for motocross (MX) and enduro riders.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 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.
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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 included17 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.
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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 DirtTime: Dirtbike Maintenance: map the core Productivity 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
Offer more customizable reminders and alerts for maintenance.
Assumption to check: Limited customization options for maintenance tasks
Validate with people who use this workflow before building.
Hypothesis 2
Implement cloud storage for users to access data across devices.
Assumption to check: No cloud sync for data
Validate with people who use this workflow before building.
Hypothesis 3
Create a community platform for users to share tips and experiences.
Assumption to check: Lack of community features or forums
Validate with people who use this workflow before building.
Hypothesis 4
Enhance UI design for a more engaging user experience.
Assumption to check: Basic UI with minimal visual appeal
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
DirtTime is the ultimate dirt bike maintenance tracker for motocross (MX) and enduro riders. Stay on top of your bike's service schedule, log rides, and keep your garage organized. Every bike has its own plan, reminders, and history — so you never miss an oil change or air filter service again. FEATURES: • Add unlimited bikes with make, model, year, nickname & photo • Smart reminders for oil changes, air filters, chain, valves, and more • Default task libraries for 2-stroke (2T) and 4-stroke (4T) engines • Track hours, kilometers/miles, or rides — choose what fits you • Environment multipliers (sand, mud, racing) adjust intervals automatically • Quick actions: Log Ride (+hours) or Log Service in just a few taps • Service history and ride logs per bike • Parts tracking: oils, filters, chains, sprockets, pads, and more • Dark Mode support • Works offline – your data stays on your device NEW IN 2.0: • iOS Home Screen Widget – See your next due task at a glance without opening the app • Suspension Tracking – Log fork and shock services with full rebuild history WHY DIRT BIKE RIDERS LOVE DIRT TIME: • Clear garage overview of all bikes • Easy "Done" button for tasks • Notifications when service is due or overdue • Perfect for motocross, enduro, hard enduro, and dual-sport riders Ride more. Wrench less.
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
TypeScript
Axios
React Navigation
React Native Paper
BUILD KIT DIFFICULTY
Starter
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.
