App Overview

Liberry icon

Liberry

Joshua Eastman · Books

Liberry is built for book and audiobook lovers

$19.99 · In-app purchases

PRICE
$19.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
9 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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Build Kit

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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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What's included18 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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Free quick prompt For a smaller starting point

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 Liberry: 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

Include a wider range of genres and user-defined categories.

Assumption to check: Limited genre selection can disappoint users.

Validate with people who use this workflow before building.

Hypothesis 2

Implement cloud sync for seamless access.

Assumption to check: Difficulties in syncing across devices.

Validate with people who use this workflow before building.

Hypothesis 3

Simplify UI/UX for better navigation.

Assumption to check: User interface can feel cluttered.

Validate with people who use this workflow before building.

Hypothesis 4

Add sharing features and book recommendations from friends.

Assumption to check: Lack of social features limits engagement.

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

Liberry is built for book and audiobook lovers. Designed to make the world’s most important public domain literature text and audio accessible to everyone, Liberry is more than just a reader—it is a powerful tool for discovery, organization, and lifelong learning. Explore tens of thousands of free books and audiobooks from public domain repositories, all available with zero download limits, fees, or quotas. Build a personal library that travels with you, annotated with a powerful interconnected note-taking system. Liberry is a one-time purchase. No subscriptions, no ads, no recurring fees. Just you and the world’s greatest stories, forever. KEY FEATURES AUDIOBOOKS • Integrated Audiobook Player: Listen to your favorite classics with a seamless, full-featured player. • Smart Playback Controls: Adjust playback speed (0.5x to 4.0x), skip forward/back, and use the sleep timer. • Miniplayer: Keep listening while you browse your library or organize your notes. • Offline Listening: Download audiobooks for zero-data listening anywhere. • Background Playback: Continue listening while using other apps or with your screen off. DISCOVER & EXPLORE • Access 60,000+ free ebooks from public domain repositories. • Take on "The Intro 100": A foundational challenge spanning from The Odyssey to The Great Gatsby. • Explore "Global Stories" to read masterpieces from Africa, The Middle East, Asia, and Latin America. • Dive into expertly curated thematic lists like "The Russian Soul", "Voices of the Veil", "Pulp, Weird, & Noir", and "Shadows & Spectres". • Search instantly across repositories, even offline. • Seamlessly download books directly to your library. READING EXPERIENCE • A beautiful, distraction-free reading environment. • Customize your experience with multiple fonts, text sizes, and reading themes (Light, Dark, Sepia). • Choose your preferred scroll mode: Vertical, Horizontal, or Two-Column Landscape. • Smart progress tracking keeps your place across all your devices. ORGANIZE & ANNOTATE • Build a connected database of your reading life. • Highlights: Save favorite passages and link them to your thoughts. • Journal: Write personal reflections linked to specific text. • Characters: Track characters with custom bios and linked quotes. • Bookmarks: Never lose a pivotal moment. • Export your notes and highlights to CSV or TXT to own your data forever. SHARE, SYNC & OWNERSHIP • Send to Kindle: Seamlessly send any book to your Kindle reader. • Export EPUBs: You own the files. Export or share them with any other app. • Sync your library, reading progress, and notes across all your devices (iOS, iPadOS). • Your library is yours: Offload books to save space without losing your metadata. • Complete Data Freedom: You have power over your data and files, forever. Liberry is built for the reader who wants to explore history, philosophy, and fiction without barriers. Rediscover the classics today.

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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.

SUGGESTED BUILD STACK
React Native
Expo
Redux
axios
react-navigation
expo-image-picker
BUILD KIT DIFFICULTY
Intermediate

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.