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.
American History, made easy!
$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 DigestibleHistory: map the core Education 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 content variety may lead to user disengagement
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: High reliance on in-app purchases may deter users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of interactive elements can make learning less engaging
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Potential difficulty in finding specific topics
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.
American History, made easy! Digestible History is a comprehensive American history app that covers every president, state, timeline from colonization to today, and thousands of places to explore across the country. It all comes together in clear, easy-to-digest pieces that give you the essentials without the extra stuff, with links to dive deeper whenever something piques your interest. US Presidents All 45 presidents, complete with biographies, accomplishments, and an interactive map of landmarks tied to each president's life. Each president gets their own timeline — over 600 events across all 47 terms — from George Washington to today. US States All 50 states plus Washington D.C., each with a state history, symbols, milestones, and fun facts presented as over 900 beautifully illustrated flashcards. Look up your home state or discover somewhere new. A Brief History Nearly 600 events spanning the full arc of American history — from early exploration to the modern era. Organized by era and presented as flippable flashcards, each one features a historical image and a quick summary of what happened and why it mattered. Tap any card for a deeper dive. The Front Page Get a glimpse into the past with real historic newspaper front pages from the Library of Congress, pulled from this exact date in history—20, 30, 40, 50, 75, and 100 years ago. A new set is available every day. Landmarks Hub Discover 5,000+ historic sites across the country on an interactive map, including National Parks, Presidential landmarks, State Parks, and a Road Trip collection of over 1,400 roadside attractions, natural wonders, historic sites, and hidden gems. You can filter by president, state, or category and open any location directly in Maps. Further Education A hand-picked collection of books, documentaries, and resources to help you go deeper on the topics you love most. If you’re a history buff, a student, a traveler dreaming up your next adventure, or just someone who wants to really understand the story of our country, Digestible History is for you. American history, in small, easy-to-digest pieces. Note: Digestible History uses a warm parchment aesthetic inspired by historical documents. Dark mode is not currently supported but is planned for a future update.
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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.