App Overview

DjVu Reader Pro - Viewer for djvu and pdf formats icon

DjVu Reader Pro - Viewer for djvu and pdf formats

LTD DevelSoftware · Books

The BEST application for reading djvu and pdf formats.

$5.99 · In-app purchases

PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.4
63 ratings · Top 30%

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.

Build your own version

Build Kit

Make this idea yours

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

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included16 files

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

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

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.

JavaScript is required to complete mailbox verification.

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 DjVu Reader Pro - Viewer for djvu and pdf formats: map the core Books workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

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

Expand support to other popular formats like EPUB or MOBI.

Assumption to check: Limited file format support for non-DjVu/PDF formats

Validate with people who use this workflow before building.

Hypothesis 2

Introduce features like highlighting, notes, and drawing.

Assumption to check: Lack of advanced annotation features

Validate with people who use this workflow before building.

Hypothesis 3

Implement a local caching mechanism for offline access.

Assumption to check: No offline access to documents once downloaded

Validate with people who use this workflow before building.

Hypothesis 4

Revamp UI with a more contemporary design and better usability.

Assumption to check: User interface could be more modern and appealing

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

The BEST application for reading djvu and pdf formats. All formats are thoroughly elaborated and are 100% supported by the application. The visualization system takes into account the specific character of the formats functioning on mobile devices (memory capacity, the number of general processor units etc.), Providing a maximum productivity and comfort when working with large documents. Elegant design, extended functionality, high speed and stability of work will make reading of your favorite literature a pleasurable experience. You can contact technical support and leave a comment without quitting the application. DjVu Reader’s special features: ■ Compatible with all popular archive formats (rar, zip, 7z, gz, tar ...) ■ Speech synthesizer ■ Integration with popular cloud services(Google Drive, Dropbox, Box, OneDrive, Yandex.Disk) ■ Integration with popular network services(SMB, FTP, SFTP, WebDAV, DLNA) ■ Open documents directly from cloud services and network services ■ Hight application stability ■ Automatic recovery bad and non standard files ■ Search and highlight text options ■ Table of contents ■ User friendly navigation ■ Page layout option in documents(single page, double pages, double pages with cover) ■ Effects for documents(sepia, monochrome, color controls) ■ Brightness control ■ Rotation lock ■ Bookmarks ■ Quick preview ■ Page scaling ■ Auto scaling for adjacent pages ■ Opening documents from external applications ■ Last open document list ■ Web Browser and download manager ■ Wi-Fi transfer ■ FTP transfer File Manager Features: ■ Intuitive interface ■ iTunes integration ■ File sorting(by name, by extension, by size, by date, by author, by progress) ■ Searching files in subfolders ■ Create, move, copy, rename, pack/unpack, delete file/folder options ■ File/folder search ■ Preview book cover Wi-Fi Transfer Features: ■ Intuitive interface ■ Create, move, rename, delete file/folder options ■ Downloading/uploading few media files with one click ■ Display upload progress Feel free to ask questions, report bugs or request new features: [email protected]

Written user reviews are not shown here. Check current App Store reviews >

Screenshots

< Scroll to see more >

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 Navigation
Expo Document Picker
React Native PDF
Zustand
Expo File System
BUILD KIT DIFFICULTY
Advanced

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.