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.
*** Most downloaded Contraction Timer app in the world! Number 1 in the USA, UK, Australia, Canada, Italy and elsewhere! ***
Free · 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.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
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 Contraction Timer & Counter 9m: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
*** Most downloaded Contraction Timer app in the world! Number 1 in the USA, UK, Australia, Canada, Italy and elsewhere! *** This is the simplest-to-use contraction timer. The app will help to track your contractions and determine when it's time to go to the hospital. If you plan on having a home birth, the app will tell you what stage of labor you are in at any given moment. Keep track of your labor by tapping a single button at the start and at the end of each contraction. The Contraction Timer analyzes the duration and frequency of contractions and will notify you when it's time to go to the hospital. Thousands of pregnant women around the world have become mothers using our app. Always consult your doctor to orient yourself in terms of contraction frequency and duration. This app is not a medical device and our recomendations are based on standard indicators. Your labor may occur differently. Therefore, do not rely exclusively on our app. If the duration and frequency of contractions do not yet correspond to the necessary indicators but labor pains become unbearable, it is better to go to the hospital as soon as possible rather than give birth at home or on the way there. Trust what your body is telling you. If you have any questions or suggestions, please email us at [email protected]. Your feedback is very important to us. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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: Users find it difficult to log contractions accurately.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited historical data analysis.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: App lacks customization options for notifications.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No way to share contraction data with healthcare providers.
Validate with people who use this workflow before building.
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.