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
FieldTracker Pro
FieldTracker Pro is the all-in-one field work companion for contractors, service technicians, and anyone who works on the go.
$4.99 · In-app purchases
PRICE
$4.99
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.
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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 included15 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 FieldTracker Pro: map the core Business 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 gamification and progress tracking to enhance user involvement.
Assumption to check: Lack of user engagement and task management features
Validate with people who use this workflow before building.
Hypothesis 2
Introduce better filtering and sorting options for tasks.
Assumption to check: Difficulty in navigating large task lists
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to set custom reminders and notifications.
Assumption to check: Limited customization options for task reminders
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
FieldTracker Pro is the all-in-one field work companion for contractors, service technicians, and anyone who works on the go. MILEAGE TRACKING Tap once to start tracking. GPS automatically logs every mile as you drive. Trips are categorized as business or personal — and every business mile is calculated at the current IRS rate of $0.725/mile so you always know your deduction before tax season. JOB MANAGEMENT Create job sites with addresses, contact info, gate codes, billing cycles, and site notes — everything you need at your fingertips when you pull up to a job. Pin GPS coordinates for one-tap navigation. WORK LOGGING Log work performed at each job with time in/out, line items, quantities, pricing, and expenses. Mark entries as invoiced and export a full CSV report for billing. PHOTO DOCUMENTATION Take and store job site photos directly in the app. Annotate photos with drawings and text notes. Share individual photos or all photos at once. MAP VIEW See all your job sites on an interactive map. Tap any pin to navigate directly to that location. CLOUD SYNC Your data syncs automatically across all your iPhone and iPad devices. Never lose a record. BUILT FOR THE FIELD • One-time purchase — no subscription, no hidden fees • Works on iPhone and iPad • Dark-optimized interface easy to read in sunlight • Export work logs to CSV for invoicing • IRS mileage deduction calculator built in • Offline support — works without internet
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
Axios
react-native-paper
@react-navigation/native
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.
