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
Heredis 2026
Take your genealogy with you everywhere you go! Super useful during family or genealogical events to present the family genealogy, show the progress of your research, exchange information, but also collect new info, i...
$9.99 · In-app purchases
PRICE
$9.99
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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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/
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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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Heredis 2026: 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
Implement an interactive and zoomable family tree diagram.
Assumption to check: Difficulty in visualizing complex family trees
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to add photos, notes, and relationships.
Assumption to check: Limited customization for family members
Validate with people who use this workflow before building.
Hypothesis 3
Create a comprehensive notification system for family events.
Assumption to check: Poor notification management
Validate with people who use this workflow before building.
Hypothesis 4
Introduce cloud sync for easy access across devices.
Assumption to check: Lack of cloud sync
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
Take your genealogy with you everywhere you go! Super useful during family or genealogical events to present the family genealogy, show the progress of your research, exchange information, but also collect new info, in mobile mode, even without an internet connection. You don't need to have the Heredis software installed on your computer in order to use the mobile version. However, if you do have the Heredis 2026 software, it will allow you to import and export files between your two devices, in addition to the GEDCOM format. You can create as many genealogies as you like, enter an unlimited number of persons, or import a GEDCOM file. Easy to use, yet comprehensive with regards to the information you can enter: create the first person and then be guided to easily add persons and the way they are related to each other. For each person, associate photos that you have just captured with your device. You can scan and save portraits, family photos, vital records, historical archives, and much, much more. Share your findings: choose the theme for your family tree chart, save it as a PDF, print it or send it by email. So convenient to stay in touch with your entire family! New in this version: • Multiple surnames: enter surnames that include the father's and mother's names in accordance with French or Spanish naming laws. • Flags: You can now assign or remove color flags that you have already created in your Heredis app. Color flags for persons are displayed in the immediate family, the lineage, and person's details. • Compliance with new operating systems. Heredis has been building family tree software programs for 30 years. Heredis is a pioneer and remains revolutionary in its approach, outpacing its competitors with innovative technology choices and genealogical solutions that are fully tailored to users' needs. In order to maintain the best possible software, Heredis works closely with its users and welcomes all suggestions that will contribute to its development. Finally, Heredis is a French cooperative company, i.e. owned by its employees. Heredis ranks among the companies that stand for an eco-responsible and socially responsible business model. Compatible only with Heredis 2026 iOS : iOS 14 to iOS 26
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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
Redux
react-native-paper
expo-router
react-navigation
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.
