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.
Dive Longer: Increase Your Bottom Time
$2.99 · 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.
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 EANx: map the core Sports 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 user engagement features
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of personalized insights
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No reminders for activities
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.
Dive Longer: Increase Your Bottom Time With this scuba dive planner, you can increase your bottom time by using Enriched Air Nitrox (EAN). The EAN calculator helps you determine the optimal nitrox blend for your dive, allowing you to extend your underwater adventures. Enjoy longer, more fulfilling dives without compromising your safety. Know Your Limits: Maximum Depth, No Decompression Limit, and More Understanding your limits is crucial for safe diving. EANx provides comprehensive information on maximum depth, no decompression limits (NDL), and other critical metrics. Stay informed and dive within safe limits to prevent decompression sickness and other diving-related risks. Deco Mix: MOD for Your Stage Bottle Planning a dive with multiple gas mixes? This app for scuba divers has you covered with its Deco Mix feature. Calculate the Maximum Operational Depth (MOD) for your stage bottles and ensure a seamless transition between gases during your dive. This feature is especially useful for technical divers who require precise gas management. Ultimate Scuba Dive Planner EANx is not just a calculation tool; it's your ultimate scuba dive planner. The app allows you to plan every aspect of your dive, from gas mixes to depth limits, ensuring you have a comprehensive dive plan before you hit the water. Stay organized and prepared with EANx, and make the most out of every dive. Why Choose EANx – Scuba Diving Calculator? EANx is designed by divers, for divers. It combines advanced algorithms with an intuitive user interface, making it accessible to divers of all experience levels. The app is regularly updated to incorporate the latest diving safety standards and practices, ensuring you have the most accurate and up-to-date information. User-Friendly Interface The app’s user-friendly interface makes it easy to input your data and get the results you need quickly. Whether you are calculating your MOD, EAN or other critical metrics, EANx provides a seamless experience, allowing you to focus on what matters most – enjoying your dive. Reliable and Accurate When it comes to diving, accuracy is paramount. This EAN and MOD calculator uses advanced algorithms to provide reliable and precise calculations, helping you make informed decisions for a safe and enjoyable dive. Trust EANx to be your reliable diving companion. This MOD calculator is the ultimate scuba diving assistance tool, offering a comprehensive suite of features to help you calculate Enriched Air Nitrox, Maximum Operational Depth, and other essential metrics. Dive safer, dive longer, and dive smarter with EANx. Download EANx – Scuba Diving Calculator today and take your diving experience to the next level.
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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.