Comparison

Highlight PDF vs Matrix

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

Head to head
About

Highlight PDF

Features
Read full description

Highlight, annotate, and organize your PDF documents effortlessly with **PDF Highlighter & Annotator** — the powerful tool designed for students, professionals, researchers, and everyday users who work with PDFs daily. Whether you're studying lecture notes, reviewing contracts, preparing reports, reading eBooks, or marking important sections in documents, this app makes highlighting text fast, accurate, and seamless. Instantly select and highlight text in PDF files using multiple vibrant colors to keep your notes organized and easy to review. Add clear annotations, emphasize key points, and improve your productivity with smooth and precise text selection tools built for speed and simplicity. Perfect for: • Studying and reviewing class notes • Research papers and academic documents • Business contracts and reports • eBooks and digital documents • Team collaboration and document feedback Features: • Multiple highlight colors for better organization • Accurate and smooth PDF text selection • Fast PDF loading and responsive performance • Simple and clean interface for easy navigation • Annotate important sections in seconds • Optimized for students, teachers, researchers, and professionals Whether you're preparing for exams, managing work documents, or organizing research materials, PDF Highlighter & Annotator gives you the essential tools to read, mark, and review PDFs more efficiently. Subscription Details: • Title: Savory All Access • Length: 1 year • Price: $39.99 per year and $7.99 per month (auto-renews) • Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy Policy: https://docs.google.com/document/d/1b2FQZ_HK2I_6ZBJhiaJw_Vii5aKW9D4dYjGfP9C8efU/edit?usp=sharing

About

Matrix

Features
Read full description

Markdown Matrix is a clean AI Markdown workspace for saving, reading, and organizing useful AI outputs across iPhone, iPad, and Apple silicon Mac. Capture valuable answers from AI tools, the web, your clipboard, or the Share Sheet. Keep them in lightweight Spaces and return to them whenever you need the original insight. SAVE AI ANSWERS • Paste Markdown from ChatGPT, Claude, and other AI tools • Import .md and .txt files • Save content through the Share Extension • Create a note manually when you want to write READ MARKDOWN BEAUTIFULLY • Focused typography for long-form reading • Clear headings, lists, quotes, tables, and code blocks • Multiple reading themes • Adjustable reading size from 60% to 120% • Select and copy text directly from a note ORGANIZE BY SPACES • Keep work, prompts, research, and personal notes separated • Move notes between Spaces • Search across your complete workspace • Sort notes by recent updates BUILT FOR IPAD AND MAC • Three-column workspace for Spaces, notes, and reading • Resizable columns on larger screens • Keyboard shortcuts for capture, search, and reading size • Comfortable large-screen Markdown reading LOCAL-FIRST WORKSPACE Your notes remain in your local workspace. Markdown Matrix does not require an account and does not use advertising or tracking SDKs. The free version includes core reading, capture, and organization features. Matrix Pro unlocks unlimited documents, additional themes, and image export through optional auto-renewable subscriptions. Privacy Policy: https://xiaohao7023.github.io/parchment-legal/privacy.html Terms of Use: https://xiaohao7023.github.io/parchment-legal/terms.html

Screenshots

Highlight PDF4 screens
Matrix3 screens

Verdict

The call

The clearest difference is update cadence: Matrix at every 3 days against Highlight PDF's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Highlight PDF sells 3 in-app purchases, starting at $7.99 per month and Matrix sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Highlight PDF ships an update every 4 months, Matrix every 3 days. The most recent releases landed on August 25, 2026 and September 18, 2026 respectively.

Scorecard1 real difference Ā· 5 level
Highlight PDF versus Matrix: the parameters behind the verdict, then further details
ParameterHighlight PDFMatrix
PriceFreeFree
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size24 MB5 MB
Age rating4+4+
DeveloperFenuku Kekeliå°č±Ŗ 黄

In-app purchases

3 purchases

Highlight PDF

Subscriptions2
  • All Access for a month$7.991 Month
  • All Access for a year$39.991 Year
One-time1
  • All Access to Lifetime$99.99
2 purchases

Matrix

Subscriptions2
  • MD Pro Monthly$1.991 Month
  • MD Pro Yearly$5.991 Year

Questions

Is Highlight PDF free?
Highlight PDF is free to download, with in-app purchases available.
Is Matrix free?
Matrix is free to download, with in-app purchases available.
Do Highlight PDF or Matrix have ads?
Neither Highlight PDF nor Matrix shows ads.
Which is updated more often, Highlight PDF or Matrix?
Highlight PDF ships an update every 4 months, and Matrix every 3 days. Most recently, Highlight PDF was updated on August 25, 2026 and Matrix on September 18, 2026.

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