Comparison

ZEN PDF PRO vs PDF Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ZEN PDF PRO

Transform your phone into a portable scanner and professional document editor. Easily convert images to PDF, merge or split files, and enhance scanned documents with smart editing tools. Securely store and share your files with a minimalist, intuitive interface.

Highlights
  • Portable scanner
  • PDF editing
  • Image to PDF conversion
  • File merging and splitting
  • Smart image editing
  • Encrypted local storage
  • Direct PDF printing
Features
Read full description

ZEN PDF: Turn your mobile device into an all-purpose scanner in seconds. Are you still worried about tedious document processing? ZEN PDF is here! Just a mobile phone, instantly start a new experience of efficient office work - turn the device into a portable scanner + professional editor + secure file manager, and control the entire process of document processing anytime, anywhere! The smart office expert in your pocket. Core function highlights, redefine efficiency, all-purpose PDF processing, easy operation at your fingertips. Freely edit PDF: adjust the document size and layout as you like, optimize text and pictures with one click, and even a novice can become a layout master in seconds! Quick merge/split: multiple reports are instantly integrated into a complete document, and large files are split into independent chapters as needed, saying goodbye to the tedious manual operation! Image to PDF: Convert high-definition images to a PDF format that can be saved and shared with one click, retaining visual details, and perfectly archiving design drafts, notes, and certificates! Smart image editing, creative control at your fingertips Crop / Flip / Filter: Precisely crop extra borders, one-click correction of tilted images, dozens of filters give images a professional texture, beautification operations are done in one step! HD wallpapers, mobile phone screens are no longer the same 10,000 + HD wallpaper library: Daily update of massive exquisite wallpapers, change the mood of the device after work, inspiration is always online! Super fast sharing and storage One-click sharing of email attachments and links, support for fast transmission on multiple platforms; Local encrypted storage of documents, no third-party intervention, privacy and security guaranteed; Directly print PDF, save the trouble of format conversion, and output meeting materials instantly! Why choose ZEN PDF? Minimalist operation: intuitive interface, scan - edit - share in three steps, zero learning cost; Multi-scenario adaptation: covers all scenarios of office, study, and life, and can easily hold business contracts, class notes, and travel notebooks; High-definition image quality: with the support of intelligent OCR technology, the text is clear and sharp, and the color of the picture is truly restored; Safe and reliable: local storage + encrypted transmission, sensitive files are protected throughout the process, and privacy will never be leaked! Download now to unlock a new way of smart office! —— Your mobile office will be light from now on ——

About

PDF Reader

Transform your smartphone into a powerful PDF scanner and editor. Easily convert images and documents to PDF, or convert PDFs to other formats. Protect your files with encryption and share them securely.

Highlights
  • Scan documents
  • Convert images to PDF
  • Convert PDF to other formats
  • Crop image sizes
  • Share documents
  • Add watermark
  • File encryption
Features
Read full description

Turbo PDF: Scanner & Editor is a highly reliable scanner application that effectively transforms your smartphone into a robust PDF scanner. This application enables seamless conversion of photos and pictures into PDF format with a simple and convenient touch function. Features of the Turbo PDF: Scanner & Editor Scan your documents, crop image sizes. Convert images to PDF format. Convert pdf to other formats. Efficient and user-friendly scanning experience with a quick and convenient interface. Share documents via social media, add watermark. File encryption to protect your privacy. By using our app you can seamlessly convert photos and documents to PDF, or convert pdf to other file formats. Turbo PDF: Scanner & Editor is the premier PDF converter that makes working with scanned documents extremely easy. Privacy Policy: https://www.turbopdftool.com/privacyPolicy.html For any feedback or queries, please contact us at mailto:turbopdf@outlook.com

Screenshots

ZEN PDF PRO4 screens
PDF Reader4 screens

Verdict

The call

The clearest difference is rating: PDF Reader at 4.8 against ZEN PDF PRO's 4.1. PDF Reader also leads on review sentiment (61% vs 21%). ZEN PDF PRO's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PDF Reader holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 1.5K and 3.2K respectively. Written reviews point the same way: 21% of ZEN PDF PRO's written reviews are positive against 61% of PDF Reader's.

UpkeepUpdate frequency

ZEN PDF PRO ships an update fortnightly, PDF Reader weekly. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
ZEN PDF PRO versus PDF Reader: the parameters behind the verdict, then further details
ParameterZEN PDF PROPDF Reader
PriceFreeFree
Rating4.1 (1.5K ratings)4.8 (3.2K ratings) — better
Positive reviews21.4% of reviews61.3% of reviews — better
Number of ratings1.5K3.2K — better
Update frequencyFortnightlyWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size46 MB70 MB
Age rating4+4+
DeveloperEINMOB LIMITEDSPARK TECH LIMITED

Customer experience

ZEN PDF PRO

All ratings1,528 ratings
Positive75.3%
Neutral4.6%
Negative20.0%
Written reviews28 reviews
Positive21.4%
Neutral0.0%
Negative78.6%

PDF Reader

All ratings3,157 ratings
Positive94.8%
Neutral1.8%
Negative3.3%
Written reviews31 reviews
Positive61.3%
Neutral0.0%
Negative38.7%

Bugs and requests

ZEN PDF PRO

Not enough reviews yet to summarise bugs or requests.

PDF Reader

Reported bugs

3 issues
  • Login issues
  • Compatibility problems with newer devices
  • Frequent crashes and freezes

Requested features

3 requests
  • More customization options
  • Improved privacy controls
  • Better customer support

In-app purchases

None

ZEN PDF PRO

No in-app purchases

None

PDF Reader

No in-app purchases

Questions

Is ZEN PDF PRO free?
ZEN PDF PRO is free to download, with no in-app purchases.
Is PDF Reader free?
PDF Reader is free to download, with no in-app purchases.
Which has better reviews, ZEN PDF PRO or PDF Reader?
PDF Reader is rated higher. ZEN PDF PRO averages 4.1 out of 5 from 1.5K ratings, while PDF Reader averages 4.8 from 3.2K ratings.
Do ZEN PDF PRO or PDF Reader have ads?
PDF Reader shows ads; ZEN PDF PRO does not.
Which is updated more often, ZEN PDF PRO or PDF Reader?
ZEN PDF PRO ships an update fortnightly, and PDF Reader weekly. Most recently, ZEN PDF PRO was updated on September 21, 2026 and PDF Reader on September 22, 2026.

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