Comparison

Drawboard PDF Annotate, Markup vs Triofox

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

Head to head
About

Drawboard PDF Annotate, Markup

Enhance your PDF workflow with powerful annotation and markup tools. This app offers a dynamic and intuitive experience for editing, drawing, and adding text to your documents. Access your work across multiple devices and collaborate in real-time.

Highlights
  • Dynamic PDF annotation tools
  • Cross-platform access and cloud sync
  • Real-time collaboration
  • Insert text, images, lines, and shapes
  • Convert images to PDF
  • Redact sensitive information (Pro)
  • Measurement tools (Pro)
Features
Read full description

Powerful PDF tools at your fingertips. The latest PDF technology and software for a better experience. With an intuitive UI designed for delight – there’s a better way to PDF! Do your best work with Drawboard. - Dynamic PDF tools that feel good to use - Multi-platform access and storage. Where you are, your work is. - Paperless. A way of working for a sustainable future TOOLS FOR EVERY JOB Fast, responsive, and accurate markup tools. Draw with best-in-class ink for flawless Apple Pencil hand-feel and finally replace pen and paper. CROSS-PLATFORM ACCESS ON ANY DEVICE Upload your annotated PDFs to the cloud and mark up with others in real time with instant sync. Go Pro in-app for additional storage capacity and advanced features. WORK YOUR WAY Customize your workspace by docking your favorite tools and build a toolbar that works for you! MORE - Text review markup - freehand highlighter, text highlighter, underline, strikeout, squiggly on PDF. - Insert lines and shapes - cloud tool, rectangle, ellipse, line, arrow, polygon and polyline on PDF. - Add text with a range of fonts and text styling options - Insert images and camera photos onto PDFs. - Convert JPG and PNG image files to PDF. - Write, annotate, ink and draw on PDFs. - Customize and edit annotation colors, stroke widths, and opacities. - Create new blank PDF documents of different size, color, orientation and page count. - Insert, rotate and delete PDF pages. - Open, read, mark up and save large and complex PDF documents. GET MORE WITH PRO - Redact text and sections of your PDF documents - Measure elements on your page with length and area measurement tools and smart page calibration - Add callouts, hyperlinks and audio notes to your documents - On-page ruler - measure objects on your page with the ease of using a tape measure

About

Triofox

Access your Windows file servers from your mobile devices. This app provides secure file sharing, data protection, and cloud migration capabilities for your mobile workforce, ensuring data privacy and control.

Highlights
  • Mobile file server access
  • Secure file sharing
  • Data protection
  • Cloud migration
  • Enhanced workforce productivity
Features
Read full description

Triofox enhances existing Windows file servers with mobile access, secure file sharing, data protection, and cloud migration, while addressing business concerns about security, privacy, compliance and control. Triofox enhances productivity of your mobile workforce without sacrificing data ownership, data privacy and data security.

Screenshots

Drawboard PDF Annotate, Markup4 screens
Triofox4 screens

Verdict

The call

The clearest difference is in-app purchases: Triofox at none against Drawboard PDF Annotate, Markup's 8. Triofox also leads on rating (5.0 vs 4.8) and iOS requirement (14.0 vs 17.0). Drawboard PDF Annotate, Markup's advantage is update cadence (weekly vs every 4 months) and ratings volume (1.9K vs 1). On price, ads and device support 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. Drawboard PDF Annotate, Markup sells 8 in-app purchases, starting at $5.99 per month. Triofox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Triofox holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Drawboard PDF Annotate, Markup has 1.9K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Drawboard PDF Annotate, Markup ships an update weekly, Triofox every 4 months. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.

Scorecard6 real differences · 4 level
Drawboard PDF Annotate, Markup versus Triofox: the parameters behind the verdict, then further details
ParameterDrawboard PDF Annotate, MarkupTriofox
PriceFreeFree
Rating4.8 (1.9K ratings)5.0 (1 ratings) — better
Positive reviews64.5% of reviews—
Number of ratings1.9K — better1
Update frequencyWeekly — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size97 MB27 MB
Age rating4+4+
DeveloperDrawboard Pty LtdGladinet, Inc.

Customer experience

Drawboard PDF Annotate, Markup

All ratings1,905 ratings
Positive96.3%
Neutral1.7%
Negative2.0%
Written reviews287 reviews
Positive64.5%
Neutral11.8%
Negative23.7%

Triofox

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Drawboard PDF Annotate, Markup

Reported bugs

5 issues
  • Annotations not syncing properly between devices
  • Unexpected loss of work and unsaved changes
  • Scrolling and page navigation issues
  • Compatibility problems with certain PDF files
  • Text input box disappearing after scrolling

Requested features

5 requests
  • Add page flattening and form filling options
  • Improve eraser tool and precision
  • Implement a dark mode
  • Provide better organization and folder support
  • Add more customization options for tools and UI

Triofox

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Drawboard PDF Annotate, Markup

Subscriptions6
  • Pro Lite7 Days trial$5.991 Month
  • Pro Plus7 Days trial$9.991 Month
  • Pro Unlimited7 Days trial$18.991 Month
Show 3 more
  • Pro Lite7 Days trial$49.991 Year
  • Pro Plus7 Days trial$83.901 Year
  • Pro Unlimited7 Days trial$159.991 Year
One-time2
  • Pro Plus$10.00
  • Pro Unlimited$20.00
None

Triofox

No in-app purchases

Questions

Is Drawboard PDF Annotate, Markup free?
Drawboard PDF Annotate, Markup is free to download, with in-app purchases available.
Is Triofox free?
Triofox is free to download, with no in-app purchases.
Which has better reviews, Drawboard PDF Annotate, Markup or Triofox?
Triofox is rated higher. Drawboard PDF Annotate, Markup averages 4.8 out of 5 from 1.9K ratings, while Triofox averages 5.0 from 1 ratings.
Do Drawboard PDF Annotate, Markup or Triofox have ads?
Neither Drawboard PDF Annotate, Markup nor Triofox shows ads.
Which is updated more often, Drawboard PDF Annotate, Markup or Triofox?
Drawboard PDF Annotate, Markup ships an update weekly, and Triofox every 4 months. Most recently, Drawboard PDF Annotate, Markup was updated on September 22, 2026 and Triofox on September 10, 2026.

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