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.
Organize book collection by creating virtual shelves and tags.
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 Bookshelf-Your virtual library: 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: In-app purchasing can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No offline capabilities
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.
Organize book collection by creating virtual shelves and tags. Track your reading progress and set reading goals to stay motivated. Manage a wishlist of books that you want to read (TBR). Discover great new reads: rate, review and share book recommendations. Create your own social profile and allow friends to follow your reading journey. Bookshelf is a free service with a sleek, functional and user-friendly interface. Some advanced features are covered by Bookshelf Pro subscription plans. ORGANIZE YOUR BOOKS - Catalog books using fast and easy to use ISBN barcode scanner - Batch scanner option allows to rapidly scan multiple books at once - Books can be added using search functionality (title/author/ISBN) - Old and rare books can be added manually - Import books from a CSV file generated by other popular book apps - Import books from Goodreads CREATE SHELVES AND TAGS - Organize books by creating virtual bookshelves and tags - Use search functionality to quickly find books on your shelves - Sort your books by title, author, number of pages, publication date, etc. - Use filters to display books matching your criteria - Track your lent and borrowed books - Add information about your book purchases - Organize books by series and volumes - Create personal notes or add other useful information - Add quotes by simply scanning the text with our OCR reader - Multiple book selection; apply batch operations - Grid view available - Dark theme available SET CUSTOM READING GOALS - Create annual reading goals to stay motivated - Define custom date range goals and share them with your friends TRACK YOUR READING - Log how many pages you have read so far and when did you start and finished reading a book - You can record multiple readings for each book SEE WHAT YOUR FRIENDS ARE READING - Create your own reading social profile - Allow your followers to see your last read books, wishlist and reading goals DISCOVER NEW BOOKS - Discover bestselling books in different categories - Share your favorite books with your friends on social media VIEW YOUR STATISTICS - Rich statistics about your books, purchase, reading progress, ratings, top authors, top categories etc. MANAGE YOUR WISHLIST - Maintain a wishlist of books that you want to read - Book price tracking and price alerts available in some countries RATE AND REVIEW - Help others to discover great books and find books for yourself - Rate books with 5 star rating (half-star ratings available) - Read book reviews from others and leave your own opinion NEVER LOSE YOUR DATA - Your data is securely stored on our servers and it's linked to your account - If you change your device/platform, you just need to log back in with your username - You can export data to a CSV file to create your own backup - You can export your data as HTML web page for easy printing with cover images BOOKSHELF PRO PLANS - Bookshelf is free to download and use - Some advanced features are covered by Bookshelf Pro subscription plans - Bookshelf Pro includes a 7-day free trial period after which you can choose between monthly, annual or lifetime plans OTHER NOTES - This is an app to organize your books and to track your reading - Reading is not available within this app FOLLOW US Stay in touch for new features and improvements - Instagram: https://www.instagram.com/bookshelfconcept/ - Facebook: https://www.facebook.com/bookshelfapp/ FEEDBACK AND SUGGESTIONS [email protected] https://www.bookshelfapp.info * Privacy policy: https://www.bookshelfapp.info/privacy-policy.html * Terms of service: https://www.bookshelfapp.info/terms-of-use.html
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.