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
RigSync Calendar
Master your rotation and take control of your finances with RigSync Calendar
$5.99 · In-app purchases
PRICE
$5.99
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 included14 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 RigSync Calendar: 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
Allow users to customize event colors, add attachments, or set reminders based on location
Assumption to check: Limited customization options for events and reminders
Validate with people who use this workflow before building.
Hypothesis 2
Implement two-way sync with Google Calendar and Outlook
Assumption to check: Poor integration with existing calendars
Validate with people who use this workflow before building.
Hypothesis 3
Add shared calendars and event invites for team collaboration
Assumption to check: Lack of collaboration features
Validate with people who use this workflow before building.
Hypothesis 4
Create home screen widgets for upcoming events and reminders
Assumption to check: No widget support for quick access
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
Master your rotation and take control of your finances with RigSync Calendar. designed specifically for the demanding schedules of oilfield professionals, working both offshore and onshore. RigSync Calendar eliminates the guesswork from your complex roster. Forget spreadsheets and manual calculations; effortlessly track your hitch, manage your time off, and estimate your monthly earnings in one secure place. Key Features: Smart Roster Management: Simply select the days you are onboard or on-site. The app automatically calculates your upcoming days off based on your rotation. Financial Clarity: Input your base salary and daily rates for precise income tracking. Track Sold Days Off: Easily log "sold days" (buybacks) and set custom values per day to see how extra work impacts your final paycheck. Real-Time Income Estimator: Get an instant overview of your estimated payout at the end of the month based on your logged shifts and extras. Work History: Maintain a comprehensive log of your time onboard/on-site. View summaries of total days worked monthly and yearly. Multi-Profile Support: Manage details for different companies or contracts if you switch jobs. Download RigSync Calendar today and keep your work life and your wallet perfectly aligned.
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
react-navigation
@react-native-async-storage/async-storage
axios
expo-calendar
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.
