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.
Tulum – Be Your Own Guide GPS locates and navigates you anywhere within the Maya ruins of Tulum in Quintana Roo, Mexico without using any external data
$0.99 · 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 Tulum – Be Your Own Guide: map the core Travel 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 information about attractions
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor user reviews regarding performance
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficult navigation between screens
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social features
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.
Tulum – Be Your Own Guide GPS locates and navigates you anywhere within the Maya ruins of Tulum in Quintana Roo, Mexico without using any external data. There’s no data usage for your mobile device’s automatic ability to locate satellite based cell signals, so no expensive charges apply for using the app. Created by renowned Maya archaeologist Dr. Edwin Barnhart, the Tulum app provides detailed information about virtually every feature of the site. The home page provides an interactive map of Tulum with each and every building clickable to reveal information regarding its construction, excavation history, and what was found inside. The “What Is That” function uses your gps location and allows you to point your mobile device at any structure to learn more about it. The “Take Me There” function allows you to choose any building at the site and receive guided navigation to its location. The descriptions for each building are available as text and audio files voiced by Dr. Barnhart. Photos of each structure are included, as well as drawings and photos of the features inside the temples – ones you can’t see because they are barred from tourist access. With the Tulum app, you can see the incredible murals that other visitors can’t! The Tulum app also includes: •General history of Tulum •Ed’s Tour – a recommended walking route •A complete buildings and features list •Personalizable photo and video galleries to remember your visit •Bibliographical references Whether you are planning on visiting Tulum or just want to learn more about the site, the Tulum app is an invaluable tool for anyone who wants to learn more about the ancient city. No other source of Tulum information, book or otherwise, is more complete. And thanks to wifi connections at selected restaurants in Tulum visitor’s center, you can download it data charge free right at the entrance to the ruins!
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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.