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
The Ehlers-Danlos Society
The Ehlers-Danlos Society’s official app is a vital tool for anyone interested in the Ehlers-Danlos syndromes (EDS) and hypermobility spectrum disorders (HSD)
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
19 ratings · Top 15%
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.
Build your own version
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 The Ehlers-Danlos Society: map the core Medical 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 notifications and threading for discussions.
Assumption to check: Limited user engagement features in community discussions.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance onboarding with guided tours and tooltips.
Assumption to check: Difficult navigation for new users.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate advanced search filters and suggestions.
Assumption to check: Inadequate search functionality for resources.
Validate with people who use this workflow before building.
Hypothesis 4
Add features for users to customize preferences and settings.
Assumption to check: Lack of personalization in user profiles.
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
The Ehlers-Danlos Society’s official app is a vital tool for anyone interested in the Ehlers-Danlos syndromes (EDS) and hypermobility spectrum disorders (HSD). Whether you are personally affected or are a healthcare professional providing care, this app offers practical information and resources tailored to your needs. Key features: • Helpful Resources: Information and resources to support you • Personal Health Profile: All your health information in one place • Symptom Tracking: Keep track of when you experience symptoms • Medication Reminders: Notification alerts to ensure you never miss a dose • Diagnostic Tools: Facilitating early and accurate diagnosis You should check with a doctor before making any medical decisions based on the information provided in this app.
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
Zustand
axios
react-native-elements
expo-router
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.
