App Overview

ShelfBee icon

ShelfBee

SCOTT TIMOTHY DENNIS · Books

See whether a book is available in your library's Libby/Overdrive collection — without leaving the page you're already on.

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
2 ratings · Top 5%

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.

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A product spec, screen plans, and build steps for your coding agent.

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What's included15 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

Screen plan

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.

Differentiate and validate

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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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for ShelfBee: 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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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

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

Allow users to personalize shelves with colors and themes.

Assumption to check: Limited customization options for bookshelves

Validate with people who use this workflow before building.

Hypothesis 2

Implement book sharing and recommendations with friends.

Assumption to check: No social sharing features

Validate with people who use this workflow before building.

Hypothesis 3

Enable offline access to shelves and books.

Assumption to check: Inadequate offline capabilities

Validate with people who use this workflow before building.

Hypothesis 4

Provide users with insights on reading habits and statistics.

Assumption to check: Lack of reading statistics

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

See whether a book is available in your library's Libby/Overdrive collection — without leaving the page you're already on. ShelfBee adds a small button to book pages on Amazon, Goodreads, TheStoryGraph, Barnes & Noble, Bookshop.org, Hardcover, and Book of the Month, showing whether that title is available to borrow right now from the libraries you care about, how many people are waiting, and roughly how long a hold would take. A companion app adds barcode scanning and a Buzz List for books you want to check on later. HOW IT WORKS 1. Turn on the ShelfBee extension in Safari. The app walks you through it with a screenshot for every step. 2. Open the bee menu and search for your library by name. Add as many as you like. 3. Browse as usual. When you land on a book page, ShelfBee checks your libraries and shows you what it found. WHAT YOU SEE • Available now — ready to borrow immediately • On hold — with the number of people waiting and an estimated wait • Not available — so you can stop wondering Results are grouped by library and split by format, so you can tell at a glance which of your libraries has the ebook and which has the audiobook. BUZZ LIST & SCANNING Save a title to your Buzz List right from the button on any book page, then check back anytime to see if it's become available. On iPhone and iPad, the app can also scan a book's barcode to look it up on the spot — handy in a bookstore or browsing your own shelves. FEATURES • Works on Amazon (21 storefronts), Goodreads, TheStoryGraph, Barnes & Noble, Bookshop.org, Hardcover, and Book of the Month • Add as many libraries as you like — public, county, consortium, or university • Reorder your libraries so the one you borrow from most sits at the top • Filter by ebook or audiobook • Save books to a Buzz List and revisit them anytime • Scan a barcode to look up a book on iPhone and iPad • Your library list and Buzz List sync across iPhone, iPad, and Mac through iCloud • Setup Guide and Troubleshooting built into the app NO ACCOUNT NEEDED No sign-up, no library card, no sign-in — not even for setup. ShelfBee reads public availability data, the same catalog information Libby shows, and never asks who you are. ONE-TIME PURCHASE Buy ShelfBee once and it's yours. No subscription, no in-app purchases, no ads, and nothing to unlock later. PRIVACY ShelfBee collects nothing. Your library choices and Buzz List live on your device and in your own iCloud account. Availability lookups go straight to OverDrive's public API, and scanned or searched books are looked up via Open Library and Google Books for title, author, and cover art — none of it linked to you. There's no ShelfBee server, no analytics, and no tracking of any kind. Questions or ideas: [email protected] ShelfBee is an independent app and is not affiliated with, endorsed by, or sponsored by OverDrive, Libby, Amazon, Goodreads, TheStoryGraph, Barnes & Noble, Bookshop.org, Hardcover, or Book of the Month.

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

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BUILD KIT DIFFICULTY
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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.