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
Gramps
Research, organize and share your family tree on your iPhone
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.0
13 ratings · Below Average
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 included17 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 Gramps: map the core Lifestyle 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
Create a more user-friendly navigation with clear instructions.
Assumption to check: Difficult to use interface and navigation.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize tree layouts and node designs.
Assumption to check: Limited customization options for family trees.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize rendering for large datasets and provide loading states.
Assumption to check: Performance issues with large family trees.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a feedback system and regular updates based on user input.
Assumption to check: Poor customer support and updates.
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
Research, organize and share your family tree on your iPhone. Key Features: ▷iOS14 widget with Birthday list ▷Easy to create ▷Easy to update ▷Easy to navigate ▷Easy to share ▷Easy to make notes ▷Easy to add images ▷Easy to export ▷Easy to import ▷Easy to mail ▷Easy to exchange data using the GEDCOM format. ▷Works without subscription ▷Works without internet connection ▷Notifications for birthdays ▷Birthday list ▷Support multiple databases to create multiple versions You can export the pedigree to html and publish it on your own family site. Or just send it as an attachment with an email to your family members. GEDCOM (an acronym standing for GEnealogical Data COMmunication) is a proprietary and open de facto[1] specification for exchanging genealogical data between different genealogy software. Your opinion is greatly appreciated. Do you have any problems or suggenstions? Feel free to contact us.
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
Supabase
react-navigation
react-native-svg
@supabase/supabase-js
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.
