App Overview

MobiPDF・PDF Text Editor・Reader icon

MobiPDF・PDF Text Editor・Reader

MobiSystems, Inc. · Productivity

MobiPDF is a complete mobile PDF suite that helps freelancers, remote workers, and small business owners scan, edit, sign, convert, and protect PDF files — also ideal for students and anyone needing a powerful yet sim...

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.8
7,341 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.

First kit free with a verified email

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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/
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.

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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 MobiPDF・PDF Text Editor・Reader: map the core Productivity 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

Offer advanced editing tools like OCR and form filling.

Assumption to check: Limited editing features compared to desktop PDF editors.

Validate with people who use this workflow before building.

Hypothesis 2

Optimize PDF rendering and editing for better performance.

Assumption to check: Performance issues with large PDF files.

Validate with people who use this workflow before building.

Hypothesis 3

Provide clear explanations of features behind paywalls.

Assumption to check: In-app purchases can be confusing for users.

Validate with people who use this workflow before building.

Hypothesis 4

Implement reliable cloud sync to enhance user experience.

Assumption to check: Syncing issues across devices.

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

MobiPDF is a complete mobile PDF suite that helps freelancers, remote workers, and small business owners scan, edit, sign, convert, and protect PDF files — also ideal for students and anyone needing a powerful yet simple PDF tool — all from one intuitive app on iPhone and iPad. KEY CAPABILITIES • Edit PDFs like a pro — modify text, images, and formatting directly in any PDF, and fully control your pages: rearrange, insert, delete, extract, duplicate, rotate, and merge PDFs into one • Scan paper documents to PDF with your camera — receipts, contracts, invoices, IDs, passports, and more • Convert PDFs to Word, Excel, PowerPoint, and ePub while preserving original layout and formatting — and convert Word, Excel, PowerPoint, ePub, PNG, and JPEG files to PDF for easy sharing • Fill out and sign PDF forms and contracts on the go — draw or reuse saved electronic signatures • Recognize text from scans and images using OCR technology and share instantly • Read PDFs your way — multiple reading modes including distraction-free reading, night mode, and Read Aloud to listen to any PDF hands-free while driving, commuting, or on the go • View, highlight, annotate, and mark up PDFs — add comments, stamps, drawings, and attachments • Protect sensitive documents with passwords, encryption, and digital certificates • Store and sync via 5GB free cloud storage on MobiDrive, plus Google Drive and Dropbox USE CASES • Edit the text, images, or layout of a PDF contract or report directly on your iPhone or iPad — no desktop needed • Convert a PDF to Word to make extensive edits, then save back to PDF for sharing • Scan a paper document, recognize its text with OCR, and convert it into a fully editable PDF • Scan a paper contract, sign it on your iPhone or iPad, and send it back — without printing • Fill out a client form or invoice PDF on the go, directly from your phone • Have a PDF report, contract, or document read aloud during your commute or drive • Merge multiple PDFs into one organized proposal, report, or portfolio • Protect a sensitive business document with a password before sharing with a client • Students: scan handwritten notes or assignments and submit them as PDFs instantly • Review, annotate, and mark up PDF documents on iPad's larger screen for a near-desktop experience WHY MOBIPDF • Advanced mobile PDF editor — edit text, images, formatting, and pages directly in any PDF • Complete PDF converter — reliably convert PDFs to and from Word, Excel, PowerPoint, ePub, PNG, and JPEG • All-in-one solution — edit, scan, sign, convert, protect, read, and organize without switching apps • Purpose-built for iPhone and iPad — intuitive mobile-first experience • Read Aloud turns any PDF into audio — stay informed while commuting or multitasking • Advanced OCR turns any scan or image into searchable, shareable text • Electronic signatures and fillable forms — no printing or faxing needed • Simple and intuitive — accessible for all ages and experience levels • Trusted by millions of MobiSystems users worldwide PREMIUM • Full PDF editing — modify text, images, and formatting in any PDF • Full PDF conversion suite — PDF to and from Word, Excel, PowerPoint, ePub, PNG, JPEG • 50GB cloud storage on MobiDrive • Advanced annotation, markup tools, and night mode • Password protection and digital certificate support TL;DR MobiPDF is the go-to mobile PDF suite for freelancers, remote workers, and small business owners — offering powerful PDF editing, reliable conversion to and from all major formats, scanning, signing, and Read Aloud, all in one intuitive app optimized for iPhone and iPad. Help Centre: https://support.mobisystems.com/hc/en-us/sections/20794399449757-iOS Privacy Policy: https://mobisystems.com/en-us/privacy-policy Terms of Use: https://mobisystems.com/en-us/terms-of-use

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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
Supabase
Zustand
pdf-lib
react-navigation
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.