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.
Must Read keeps your whole reading life in one place
Free
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.
Your first Build Kit is free with a verified email.
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 Must Read – The 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Must Read keeps your whole reading life in one place. Track every book, time your reading, read and listen to classics, and find your next book on shelves picked by our editors. Build a reading habit, clear your TBR pile, or discover your next favorite book. Sign in and your library is with you on all your devices. TRACK YOUR BOOKS - Add books with the barcode scanner, or search by title, author or ISBN - Organize by status: Want to Read, Reading, Completed, Did Not Finish - Track pages, or time for audiobooks, and mark each book as physical, ebook or audiobook - Write notes and reviews, and rate books with quarter-star precision - Make your own lists, with regular books and classics together - Import from Goodreads, StoryGraph, Book Tracker, Reading List or Booklog, or any CSV file with titles and authors, and see a preview first READ YOUR OWN EBOOKS - Bring your own EPUB and PDF files from Files, AirDrop or other apps - They wait in Imported books, kept on this device READING TIMER AND LIVE ACTIVITY - Start a timer when you sit down to read, with a goal of 15, 30 or 60 minutes, or your own - Follow it on the Lock Screen and in the Dynamic Island - See pages per session and your reading speed, and build streaks - Set reading reminders for each day of the week APPLE WATCH - Start a session from your wrist and set your page with the Digital Crown - Your current read and your streak on the watch face ASK MUST READ - Not sure what to read next? Pick a mood, like Short and quick or Finish what you started, and get one pick from your own shelf and our editors' lists WIDGETS - Currently Reading widgets in every Home Screen size, plus the Lock Screen - Streak widget: this week's reading days and today's pages - Choose which books your widgets show, and in what order READING STATS - Reading DNA: your reader archetype, favorite time of day, top genres and pace - Books, pages, hours and reading speed, this year and all time - Reading calendar with daily covers and streaks - Yearly reading goal with weekly progress DISCOVER BOOKS - Shelves picked by our editors, with lists for many countries - Similar books on book pages, drawn from shared authors and genres - Browse 27 genres, or tap a genre or author on any book - Point your camera at a book with Visual Intelligence (on iPhones with Apple Intelligence) CLASSICS LIBRARY - Public domain eBooks from Project Gutenberg and audiobooks from LibriVox - Built-in reader with fonts, themes, bookmarks and a Contents list that marks your chapter SIRI AND SHORTCUTS (iOS 26 and later) - Ask what you're reading, your top-rated books, your stats or your streak - Add, finish and rate books by voice MUST READ CARD AND FRIENDS - Add your Must Read card to Apple Wallet and keep your reading at a glance - Invite friends with your code: you each get 5 more books on the free plan SHARE YOUR READING - My bookshelf: share your library as a picture of a bookcase - Share cards for any book: Colorful, Minimal, Dark, or your own color or photo FIND AND BUY BOOKS - Links to bookshops such as Bookshop.org, Amazon and Apple Books, depending on your country Made for iPhone, iPad, iPhone Duo and Apple Watch. --- Must Read Pro unlocks unlimited books, reading timer on all books, unlimited lists and the full classics library. - Monthly: $4.99/month - Yearly: $29.99/year (7-day free trial) - Lifetime: $79.99 (one-time purchase) - Family Sharing supported Free: 10 books, 1 custom list, timer on 1 book, 1 classic eBook, 1 audiobook, reading reminders, full search and explore. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. You can manage and cancel your subscriptions in your Apple ID account settings. Privacy Policy: https://mustreadapp.com/privacy Terms of Use: https://mustreadapp.com/terms
Written user reviews are not shown here. Check current App Store reviews >
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: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor performance
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.
Not assessed in a Build Kit yet.
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.