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
Families
Families is designed to operate in conjunction with Legacy Family Tree, the leading Windows-based genealogy software from Millennia Corp
$14.99 · In-app purchases
PRICE
$14.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.9
10 ratings · Top 50%
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 included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 Families: 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 create custom reminders and recurring events.
Assumption to check: Limited customization for tasks and events
Validate with people who use this workflow before building.
Hypothesis 2
Integrate with Google Calendar and iCal for better scheduling.
Assumption to check: Lack of integration with other calendars
Validate with people who use this workflow before building.
Hypothesis 3
Simplify navigation and enhance the onboarding process.
Assumption to check: User experience can be clunky
Validate with people who use this workflow before building.
Hypothesis 4
Enable shared task management and family member assignments.
Assumption to check: No collaborative features
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
Families is designed to operate in conjunction with Legacy Family Tree, the leading Windows-based genealogy software from Millennia Corp. Your Legacy family files can be easily transferred to your iPhone, iPod Touch, or iPad, enabling them to be viewed and edited wherever you are. Families supports the following functionality: - Multiple family files - Supports GEDCOM as well as Legacy files - New family files can be created from scratch - Family View, Pedigree View, Descendant View and Timeline - Relationships - Events - To Do Lists - Master and Detail Sources - Locations and Addresses, with mapping display - Alternate Names - Master Lists - Pictures, including the ability to add pictures from camera or photo album - Documents, audio and video files - Bookmarks - Powerful search options - Portrait and Landscape mode on all views - Supports Legacy 6, 7, 8 and 9 - Support for Legacy 9 features, including same sex relationships, hashtags and stories Families uses a highly efficient database implementation, allowing very large family files to be supported. Users have successfully displayed and edited files containing over 300,000 individuals on an iPhone. Families requires access to a Wi-Fi network or use of a USB connection in order to transfer family files between your device and your PC. Families requires a companion program running on the PC to transfer family files to and from the iPhone, iPod Touch or iPad. This program, Families Sync, can be downloaded free of charge from www.telgen.co.uk/families/sync. A sample family file is included. Support is available via [email protected].
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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.
