Comparison

3D PDF Viewer vs PDF Gear

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

Head to head
About

3D PDF Viewer

View and interact with 3D models embedded in PDF files on your mobile device. Easily zoom, pan, and rotate models using intuitive multi-touch gestures. Load files directly from cloud storage services like Dropbox and Google Drive.

Highlights
  • 3D PDF model rendering (.prc)
  • Multi-touch gestures (zoom, pan, rotate)
  • Import from cloud storage
  • Open password-protected PDFs
  • Integrated Box and Dropbox browsing
  • Supports meshes and colors
Read full description

3D PDF Viewer is a lightweight 3D PDF document viewer with powerful capabilities. 3D PDF Viewer extends the use of 3D PDF to mobile devices by providing the user ability to view and interact with 3D models stored in 3D PDF files. User can easily zoom, pan and rotate 3D model with multi-touch gestures. The application recognises .pdf file extension and user can choose to load .pdf files into this application directly from other applications like email client, web downloads, FTP, Dropbox, Google Drive, Box and any other cloud storage applications. 3D PDF Viewer is integrated with Box and Dropbox cloud storage allowing user to directly browse files on Box.com and Dropbox.com storage in the application itself. Three sample 3D PDFs are bundled with the application. 3D PDF Viewer current version contains following features: - 3D PDF model rendering (.prc files) - Multi-touch gestures like zoom, pan, rotate and fit to screen - Import models from email attachment, Dropbox, Google Drive, Box or any other cloud storage application. - Open password protected pdf files. - Easy file browsing for Box and Dropbox user (Box and Dropbox cloud storage is natively integrated with the application). - Supports meshes and colors. Please do send your feedback to us 3DPDFViewer.iOS@ProtoTechSolutions.com

About

PDF Gear

This app offers a comprehensive suite of tools for managing PDF documents on mobile devices. Users can easily view, annotate, edit pages, fill out forms, and digitally sign documents. It provides a free and unlimited experience for all its powerful PDF manipulation features.

Highlights
  • View and print PDFs
  • Annotate with highlights, text, and drawings
  • Organize pages (add, delete, rotate, extract)
  • Fill out forms and sign documents
  • Manage PDF files (duplicate, rename, move, share)
  • Open and save to device & iCloud
Features
Read full description

Want a well-featured and easy-to-access PDF solution for mobile use? PDFgear for iOS could achieve this! With PDFgear for iOS, users could handle their PDFs with ease, including viewing, printing, annotating, page editing, signing, etc. The abundant features will let you fill out forms, sign contracts, finish works, review documents, and make more possibilities in PDF! PDFgear for iOS provides free use for all functions without any limits like trial watermark, page count, etc. The concise design brings users a satisfying experience, and the powerful performance makes the perfect document. PDFgear will make your study and work easier to carry out PDFs! Try it on your own! View and Print PDF • Open and view PDFs with easy touch • Zoom in or out for better details • Jump to the appointed page directly • Print PDF from your phone Annotate PDF • Markup texts in PDF with highlight, underline and strike-through • Input texts with the color and font size you need • Draw shapes like rectangles, circles, lines, and arrows easily • Write on PDFs with the Ink tool, and erase the ink freely Organize Pages • Add, delete, and rotate pages supported • Extract pages from the PDF file with the aimed page range Fill out Forms & Sign PDFs • Insert text to the form at the place you need • Put common symbols like checkmarks and crossmarks in the document • Add built-in or customized stamps to the form • Sign the PDF with the signature created from image, keyboard, or drawing Manage PDFs • Manage PDF files with duplicate, rename, copy, move, share, etc. • Open and save PDFs in the device & iCloud

Screenshots

3D PDF Viewer4 screens
PDF Gear4 screens

Verdict

The call

The clearest difference is review sentiment: PDF Gear at 85% against 3D PDF Viewer's 0%. PDF Gear also leads on rating (4.7 vs 1.5) and update cadence (monthly vs every 10 months). On price, ads, in-app purchases and monetization model 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 Gear holds the better App Store score, 4.7 against 1.5. That said, the two scores are not equally well evidenced: PDF Gear has 8.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of 3D PDF Viewer's written reviews are positive against 85% of PDF Gear's.

UpkeepUpdate frequency

3D PDF Viewer ships an update every 10 months, PDF Gear monthly. The most recent releases landed on June 4, 2026 and September 25, 2026 respectively.

Scorecard4 real differences · 6 level
3D PDF Viewer versus PDF Gear: the parameters behind the verdict, then further details
Parameter3D PDF ViewerPDF Gear
PriceFreeFree
Rating1.5 (2 ratings)4.7 (8.6K ratings) — better
Positive reviews0.0% of reviews85.1% of reviews — better
Number of ratings28.6K — better
Update frequencyEvery 10 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size21 MB46 MB
Age rating4+4+
DeveloperProtoTech Solutions and Services Pvt. Ltd.PDF GEAR TECH PTE. LTD.

Customer experience

3D PDF Viewer

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews23 reviews
Positive0.0%
Neutral4.3%
Negative95.7%

PDF Gear

All ratings8,601 ratings
Positive93.6%
Neutral2.0%
Negative4.4%
Written reviews713 reviews
Positive85.1%
Neutral3.5%
Negative11.4%

Bugs and requests

3D PDF Viewer

Not enough reviews yet to summarise bugs or requests.

PDF Gear

Reported bugs

3 issues
  • Crashes when opening certain PDF files
  • Inability to edit text in forms on iPad
  • Corrupted PDFs after repeated editing and saving

Requested features

6 requests
  • Add password protection and encryption
  • Improve undo/redo functionality
  • Enhance text editing capabilities
  • Implement better auto-save and file recovery
  • Provide more customization options
Show 1 more
  • Integrate with more cloud storage services

In-app purchases

None

3D PDF Viewer

No in-app purchases

None

PDF Gear

No in-app purchases

Questions

Is 3D PDF Viewer free?
3D PDF Viewer is free to download, with no in-app purchases.
Is PDF Gear free?
PDF Gear is free to download, with no in-app purchases.
Which has better reviews, 3D PDF Viewer or PDF Gear?
PDF Gear is rated higher. 3D PDF Viewer averages 1.5 out of 5 from 2 ratings, while PDF Gear averages 4.7 from 8.6K ratings.
Do 3D PDF Viewer or PDF Gear have ads?
Neither 3D PDF Viewer nor PDF Gear shows ads.
Which is updated more often, 3D PDF Viewer or PDF Gear?
3D PDF Viewer ships an update every 10 months, and PDF Gear monthly. Most recently, 3D PDF Viewer was updated on June 4, 2026 and PDF Gear on September 25, 2026.

Other comparisons