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
Master-Trip
Discover Master-Trip, the ultimate trip-master app for rallye drivers on iOS, offering unparalleled accuracy and complete customization for your trips.
$3.99
PRICE
$3.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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 included16 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 Master-Trip: 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
Our clone can prioritize a cleaner UI with fewer distractions.
Assumption to check: Users find navigation apps cluttered and hard to use.
Validate with people who use this workflow before building.
Hypothesis 2
Implement more reliable traffic data sources.
Assumption to check: Real-time traffic updates can be inaccurate.
Validate with people who use this workflow before building.
Hypothesis 3
Use higher quality text-to-speech for clearer instructions.
Assumption to check: Voice navigation can be unclear or hard to understand.
Validate with people who use this workflow before building.
Hypothesis 4
Provide a more straightforward offline map download process.
Assumption to check: Offline maps can be limited or tricky to download.
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
Discover Master-Trip, the ultimate trip-master app for rallye drivers on iOS, offering unparalleled accuracy and complete customization for your trips. Key Features: • Total and partial distance counters • Total and partial timers • Quick correction buttons • Pause function • Forward or reverse mode With the handy counters, access a wealth of additional information such as speed, altitude, time, true and magnetic heading, longitude and latitude, current city, GPS signal, average speed, and battery status. Master-Trip's simple and user-friendly interface keeps you focused on the road while easily accessing the information you need. Personalize your experience with a variety of fonts and themes for the counters, creating an interface that matches your style. Control Master-Trip with a simple press of the Flic button. Configure up to 7 actions for 3 different pressure types, making navigation even smoother and more intuitive. With the companion app for Apple Watch, view all your counters and pause/resume your journey directly from your wrist, for an even more convenient experience. Take advantage of the "Copilot Screen" feature, allowing you to connect a second device so pilot and copilot can follow the same trip on their respective devices. Embark on an unmatched navigation journey with Master-Trip, your ultimate iOS rallye tool.
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
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Expo
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Zustand
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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.
