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.
Join a community of good people discussing great stories on Fable, an app designed to find, discuss, and track books and TV shows
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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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 Fable: Track & Discuss Books: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Join a community of good people discussing great stories on Fable, an app designed to find, discuss, and track books and TV shows. Set reading goals, get personalized reading stats, discover new books and shows, and connect with fellow readers in online book clubs and TV clubs. TRACK YOUR READING LIFE: Stay organized with beautiful lists, reading goals, and daily streaks that encourage you to read more. - Organize the books you’re currently into, what’s on your TBR, what you finished, and DNFed - Import your book lists from Goodreads and Kindle to keep everything in one place - Build custom lists for all of your niche reading interests - Build watch lists for the TV shows you’re interested in, currently watching, finished, and more - Follow lists from other readers for inspiration, and share your own VIEW PERSONALIZED STATS: Learn more about yourself as a reader with deep insights, charts, and graphs about your reading history. - Import your lists from Goodreads or Kindle to power your reading stats - Visualize your progress to your annual reading goal - See your most-read authors and genres - See your longest reading streak - View your average book rating across all the books you finished BUILD A READING HABIT WITH STREAKS: Stay motivated with tools designed to help you tackle your reading goals. - Create daily reading streaks - Track your book progress daily based on the page or percentage read - Edit past streaks if you forget to log a day of reading - Add our home screen widget for one-tap access to your streaks - Set annual reading goals to challenge yourself - Get reminders to keep your reading streak alive CREATE BETTER BOOK REVIEWS: Share your perspective with customized book ratings and book reviews. - Import your lists and reviews from Goodreads - Rate and review books with half-stars (and update your Goodreads ratings with half-stars) - Add expressive tags to share exactly how the book made you feel - Add spice level ratings to your book reviews - Pair your book review with emoji reactions for further customization - Leave book reviews in your book club’s reflection room or on the book’s detail page JOIN BOOK & TV CLUBS: Explore thousands of free book and TV clubs for every niche interest, or start your own club to read or watch with friends or family. - Join your favorite BookTokkers’ book clubs, or start a buddy read to discuss books with friends - Find clubs led by TV recappers and reviewers from TikTok, YouTube, and elsewhere - Spark conversations with your club in organized, spoiler-free chapter rooms and episode rooms - Leave reviews in the reflection room at the end of the book or show - Read or watch at your own pace or follow the club’s suggested milestones DISCOVER NEW BOOKS & SHOWS: Find your next favorite book to read or show to watch. - Use Scout to get personalized book recommendations - Ask Scout to randomly select your next read from your TBR - Import your Goodreads or Kindle lists for even more personalization - Discover new books and shows from Fable’s editorial team - Follow friends’ lists in the For You feed for community recommendations BUY EBOOKS DESIGNED FOR INTERACTIVE READING: Experience an entirely new way to read books inside Fable’s custom ebook reader. - Join other readers who are “social reading” inside thousands of free book clubs - Annotate books with highlights, notes, tabs, comments, and reactions right inside the book - Respond to discussion prompts embedded inside the book - Discover thousands of free books to read inside the Fable app, or shop from our catalog of over one million interactive ebooks SHOW OFF WHAT YOU READ - Customize monthly Reading Wraps to highlight the books you read that month - Come back at the end of the year for an annual wrapup of your year in reading Terms of use: https://fable.co/terms
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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 options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Community engagement can be low
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase options are not clear
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Sync issues with reading progress
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.