Comparison

Drawboard PDF Annotate, Markup vs Improvement OS

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

Improvement OS

Read full description

You are not your habits. You are your identities. Habits are the evidence. The identity is the work. Most habit apps track what you do. ImprovementOS builds who you are. Every app you've tried was built to track behavior. None of them were built to change who you are. Motivation fades. Willpower runs out. Identity stays. HOW IT WORKS Start with your biggest goal. OS generates your identity declaration — "I am someone who..." — then suggests the identity labels you need to adopt to become the person who achieves it. Your daily actions become evidence. Each completion is a vote for who you're becoming. WHAT MAKES IT DIFFERENT — Evidence, not habits. No streaks to protect. Just a batting average that builds over time. — Identity labels. Builder. Writer. Runner. Each identity tracks its own evidence and grows independently. — Morning Brief. Every morning, a quiet AI-generated brief grounded in your identity and your recent pattern. No chat tab. AI woven into the moments that matter. — Comeback Protocol. After missed days, OS doesn't guilt you. It asks what was going on, reframes without judgment, and gives you one micro-intention to restart. You're back. That's the whole win. — Weekly Review. Pattern, not performance. AI insight grounded in your actual data. — 84-day pattern window. Long enough to see who you're actually becoming. Annual plan includes a 3-day free trial. Monthly plan is full access, no trial. $6.99/month or $29.99/year. Cancel anytime from iPhone Settings. LEGAL: Terms of Use: https://improvementos.com/terms Privacy Policy: https://improvementos.com/privacy

Screenshots

Drawboard PDF Annotate, Markup4 screens
Improvement OS4 screens

Verdict

The call

The clearest difference is iOS requirement: Improvement OS at 15.1 against Drawboard PDF Annotate, Markup's 17.0. On price, ads, in-app purchases 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 and Improvement OS sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
Drawboard PDF Annotate, Markup versus Improvement OS: the parameters behind the verdict, then further details
ParameterDrawboard PDF Annotate, MarkupImprovement OS
PriceFreeFree
Rating4.8 (2K ratings) — better—
Positive reviews64.2% of reviews—
Number of ratings2K — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size98 MB47 MB
Age rating4+4+
DeveloperDrawboard Pty LtdSwaraj Papadkar

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

Improvement OS

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
2 purchases

Improvement OS

Subscriptions2
  • ImprovementOS$6.991 Month
  • ImprovementOS3 Days trial$29.991 Year

Questions

Is Drawboard PDF Annotate, Markup free?
Drawboard PDF Annotate, Markup is free to download, with in-app purchases available.
Is Improvement OS free?
Improvement OS is free to download, with in-app purchases available.
Do Drawboard PDF Annotate, Markup or Improvement OS have ads?
Neither Drawboard PDF Annotate, Markup nor Improvement OS shows ads.

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