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
JobClock Time Mobile
JobClock Time Mobile is a simple, fast time-tracking app built for tradespeople — contractors, electricians, plumbers, landscapers, dirt-work crews, and anyone who bills clients by the hour.
$0.99 · In-app purchases
PRICE
$0.99
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 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 JobClock Time Mobile: 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 a more intuitive time entry system with reminders.
Assumption to check: Difficulty in tracking time accurately for multiple projects.
Validate with people who use this workflow before building.
Hypothesis 2
Add detailed analytics and insights on time usage.
Assumption to check: Limited reporting features to analyze productivity.
Validate with people who use this workflow before building.
Hypothesis 3
Design a cleaner, modern UI with better navigation.
Assumption to check: Clunky user interface that can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce team management and project sharing capabilities.
Assumption to check: Lack of collaboration features for teams.
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
JobClock Time Mobile is a simple, fast time-tracking app built for tradespeople — contractors, electricians, plumbers, landscapers, dirt-work crews, and anyone who bills clients by the hour. Stop guessing at the end of the week. Tap to start the clock when you start work, tap to stop when you're done. JobClock tracks your hours, calculates your earnings, and gives you a clean report you can email straight to a client or to your accounting software. FEATURES - Big, easy-to-read timer that turns green when running and red when stopped — no squinting to check if it's tracking - Multiple clients and projects, each with its own hourly rate - Live Activity on your Lock Screen so you can see the running timer without unlocking your phone - History view with totals by client, by project, or by date range - Email reports — generate a clean professional summary and send it from your iPhone Mail app - Backup and Restore to the Files app — your data stays on your device and on your iCloud Drive (or wherever you save it) - Add notes to any time entry to remember what you worked on - Filter history by date and client to see exactly what you billed for any period PRIVACY FIRST JobClock Time Mobile keeps your data on your phone. There are no servers, no accounts to create, no analytics, and no third-party tracking. Your client list and time entries belong to you and only you. NO SUBSCRIPTIONS One-time purchase. No subscriptions, no in-app purchases, no ads. Pay once and use the app forever. PERFECT FOR - Contractors and subcontractors who bill multiple clients - Electricians, plumbers, HVAC techs, and tradespeople - Landscapers and lawn care professionals - Excavation, grading, and dirt-work crews - Anyone who needs simple, reliable time tracking on the job Hughes Dirt Work LLC builds JobClock Time Mobile from the field — designed for people who actually work for a living. Built by a small business, for small businesses. Need a more powerful version with Google Calendar integration, cloud backups, and hauling cycle tracking? Check out our companion app JobClock Time Tracker for iPad.
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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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
React Navigation
Zustand
react-native-elements
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.
