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
TrackAddict Pro
Using Your Smartphone For The Track Is Easier Than Ever!
$8.99 · In-app purchases
PRICE
$8.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
269 ratings · Top 30%
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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included19 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 TrackAddict Pro: map the core Sports 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 more reliable GPS tracking and signal processing.
Assumption to check: Inconsistent GPS tracking accuracy
Validate with people who use this workflow before building.
Hypothesis 2
Provide more export formats and cloud storage options.
Assumption to check: Limited export options for session data
Validate with people who use this workflow before building.
Hypothesis 3
Offer a more competitive pricing model with flexible subscription options.
Assumption to check: High price point for basic features
Validate with people who use this workflow before building.
Hypothesis 4
Design a more user-friendly onboarding process with tutorials.
Assumption to check: Complex user interface for new users
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
Using Your Smartphone For The Track Is Easier Than Ever! • Road Course, Autocross, Rally, Drift, 4x4, and Drag Racing • Race Timing + Data Logging + Analysis + Video • Works Almost Anywhere! 1000+ Predefined Circuits, or Add Your Own • GPS Lap Timer & Display with Predictive Timing (Circuit mode) • Sector Split Timing & Theoretical Lap Time (Circuit mode) • High-Definition Video Recording + Data Overlay • Lap, GPS, G-Force, and OBD-II Data Logging • Driving Line Analysis, Statistics, Data Graphs, and Run / Lap Comparison • Optional Live Telemetry Streaming via Live.RaceRender.com • Also Supports External GPS and OBD-II Devices • OBD-II Live Monitor, Code Scanning / Reset, and Data Logging • Easily Exports Data and Video to RaceRender TrackAddict, by HP Tuners, transforms your iPhone®, iPad®, or iPod touch® into a motorsports telemetry and video system. See your lap times instantly, capture video and telemetry data, compare circuit laps side-by-side, impress your friends with video+data overlays, and more! Quick and easy setup. Advisories and Disclaimers: Always drive safely. Intended for responsible use in a motorsports environment. Use at your own risk. Works on iPhone and compatible GPS-enabled iPad, iPad mini, and iPod touch devices. Devices which do not contain suitable GPS hardware may work when combined with a compatible external GPS device. Performance depends on good GPS reception conditions, and may vary. Features, capabilities, and pricing may differ between platforms and are subject to change at any time. OBD functionality is optional, and would require a supported OBD-II interface device and a compatible OBD-II compliant vehicle. See website for details. Features and capabilities can vary depending on your device and other circumstances. Use of Live Streaming feature is optional. Services are provided as-is, and are subject to change or discontinuation at any time. This functionality does have privacy implications. Please see this app's online documentation and http://Live.RaceRender.com before enabling its use. Use of Live Streaming service requires an Internet connection, and is therefore subject to your wireless carrier and/or Internet provider's data rates. Continued use of GPS running in the background can dramatically decrease battery life.
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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
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.
