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Case study

● Live on Google Play

PDF Master Pro

A portable office in your pocket: scan, OCR, edit, convert, compress and password-protect PDFs — designed around local processing so documents stay on the phone.

Get it on Google Play ↗ Read the case study ↓

Client

iToolApk Ltd · in-house product

Platform

Android

Category

Tools

Last update

29 Aug 2026

Status

Live on Google Play

Services: Product strategyUI/UX designAndroid developmentOn-device OCRDocument processingLaunch & ASO

Overview

Scan, OCR, merge, compress and protect PDFs on-device. Files never leave the phone.

The problem

Most PDF tools upload your documents to a server, which is a privacy risk for contracts, IDs and invoices.

The approach

PDF Master does all its processing on the device. Scanning, text recognition, merging, compression and encryption run locally, so the app works offline and files stay private.

What I built

  • An on-device OCR and scanning pipeline
  • PDF merge, compression and protection tools
  • An offline-first Android app on Google Play

Key features

What it does

  1. PDF Master Pro: Document scanner

    01

    Document scanner

    Scan receipts, contracts, notes and whiteboards with smart cropping and enhancement for clean, shareable digital copies.

  2. PDF Master Pro: OCR text extraction

    02

    OCR text extraction

    Optical character recognition pulls editable text out of photos and scans — no retyping.

  3. PDF Master Pro: PDF editor & organiser

    03

    PDF editor & organiser

    Merge, split, extract, reorder, rotate, crop and watermark pages, and convert photos to PDF or PDF pages to images.

  4. PDF Master Pro: Compress & protect

    04

    Compress & protect

    Shrink large files with the built-in compressor and lock sensitive documents with password encryption.

Gallery

Screens

Technology

How it's built

Android PDF Master Pro Android On-device OCR PDF processing
Platforms → product → technologies

How iToolApk delivers

The process

  1. 01

    Discover

    Understand the users, the market and the problem worth solving.

  2. 02

    Design

    Flows, wireframes and a polished UI system, tested early.

  3. 03

    Build

    Native Android and web engineering with clean, scalable APIs.

  4. 04

    Test

    Real-device QA, performance tuning and privacy review.

  5. 05

    Launch & grow

    Store listing, ASO and SEO, then iterate on real feedback.

Built by iToolApk

Planning a product like PDF Master Pro? Let's build it together.

iToolApk is the AI and software development studio I founded in 2023. We design and ship mobile apps, web platforms and AI automation for businesses, and publish our own apps on Google Play.

Start a project ↗ Get the app ↗

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