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.
epilogue is the book tracking app for readers who want something personal, private, and actually useful.
$6.99 · 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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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 epilogue - Book Tracker: map the core Books 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 book discovery features
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficulties in goal tracking
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inconsistent UI components
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.
epilogue is the book tracking app for readers who want something personal, private, and actually useful. No account. No ads. No algorithm. Just your books. --------------------------- YOUR LIBRARY, YOUR RULES --------------------------- Add books manually, scan a barcode, type an ISBN to auto-fill, or import from a Goodreads or StoryGraph export in one tap. epilogue carries over ratings, shelves, reviews, and read dates. Every book gets a cover, genre, rating, finish date, tags, source (Kindle, Kobo, Audible, library loan - anything), and a review if you want one. --------------------------- FOUR WAYS TO SEE YOUR LIBRARY --------------------------- - Cards: clean, fast grid - Bookshelf: your books as spines on wooden shelves - eBook view: digital reads laid out as little tablets - Cassette deck: audiobooks rendered as physical cassettes with playback controls and listening logs Same data, four moods. Switch any time. --------------------------- A READING JOURNAL THAT ACTUALLY TRACKS READING --------------------------- Most book apps tell you what you read. epilogue tracks when and how you read it. The built-in journal gives you a calendar view of every day of the year. Tap any date to log books, pages, audiobook minutes, and a personal note. Build streaks. See your patterns. Find out which months won, and which the sofa took. --------------------------- TO-BE-READ LIST --------------------------- Your TBR is its own dedicated space, separate from your library. Sort by title, author, date added, or shuffle randomly. Cannot decide what to read next? Hit "What is next?" and let epilogue pick. When you start a book, move it to your library in one tap. --------------------------- STATS WORTH READING --------------------------- - Books read per month and year - Pages read and hours listened over time - Reading streaks: current and longest - Most-read genres and authors - Average rating breakdown - DNF rate (we do not judge) Filter by year, month, genre, or author. --------------------------- GUIDED REVIEWS --------------------------- Finish a book, get four short prompts: what you loved, what did not land, who you would recommend it to, a favourite quote. Plus free-form space for everything else. Skip them, fill them in, mix and match. --------------------------- AUDIOBOOKS, PROPERLY --------------------------- Audiobooks tracked alongside paper and ebooks: runtime, playback speed, minutes per session. Listen at 1.5x and the app converts wall-clock minutes into content minutes so stats reflect what you actually heard. --------------------------- BUILT ON A FEW QUIET PRINCIPLES --------------------------- - PRIVATE: everything stored on your device by default. No account required. - OPTIONAL SYNC: turn on iCloud or Google Drive if you want devices in sync. Off by default. - OFFLINE FIRST: works without a connection. Your library is always there. - FOCUSED: no feed, no follower counts, no noise. Just your reading. - YOURS: export to Excel or CSV any time. --------------------------- DESIGNED FOR IPHONE AND IPAD --------------------------- Built natively for iOS. Your library, stats, and journal scale beautifully whichever device you have got in hand. --------------------------- EVERYTHING ELSE --------------------------- - 12 colour themes - Barcode scanner - Automatic cover art from multiple sources - Backup and restore --------------------------- epilogue is for readers who treat books seriously and want an app that does the same. One paid app: no subscriptions, no upsells. Everything is included. Bring your books with you.
Written user reviews are not shown here. Check current App Store reviews >
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.