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.
This app helps women understand and track fertility using evidence-based Natural Family Planning methods
$5.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Eden Fertility: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Limited educational content about fertility
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Data privacy concerns
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Difficult navigation in existing apps
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
This app helps women understand and track fertility using evidence-based Natural Family Planning methods. Designed for both beginners and experienced users, it supports cycle awareness through daily observations of cervical mucus and basal body temperature. Built around the principles of the Creighton and Billings approaches, the app clearly identifies fertile and infertile phases without altering or suppressing the body’s natural functions. Whether you are trying to conceive or responsibly space pregnancies, the app encourages informed, intentional decision-making grounded in respect for the female body. Features include: - Daily fertility observations and cycle tracking - Clear fertile and infertile phase indicators - Educational content explaining cycle patterns and fertility signs - Faith-respectful design that supports Christian values - Private, secure data with no hormone or medication tracking required This app does not provide medical advice or replace professional instruction, but serves as a practical companion for women seeking a natural, holistic approach to fertility awareness—one that honors health, marriage, and the meaning of fertility. Subscription Information: All features of the app require a subscription to use. Eden Fertility Offers monthly and yearly subscription options. Payment will be charged to your Apple Account at confirmation. Subscriptions automatically renew unless canceled or turned off before renewal date. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ *Note: Eden is designed for educational purposes and to help you track your fertility signs. It is not intended to be used as a form of contraception or as a substitute for professional medical advice. Always consult with a healthcare provider for personalized medical guidance. Support email: [email protected]
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.