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Highlights vs Signal

Professional comparison and analysis to help you choose the right software solution for your needs.

Highlights icon
Highlights
Signal icon
Signal

Highlights vs Signal: The Verdict

⚡ Summary:

Highlights: Highlights is a PDF annotation and note taking app for Windows, Mac, iOS and Android. It allows users to highlight, underline, strikethrough, add text notes, shapes and freehand drawings to PDF documents. Key features include organization of annotations by color category and easy export of notes.

Signal: Signal is a free, open source, encrypted messaging and voice calling app. It offers end-to-end encryption for secure communication. With Signal, users can send encrypted messages, make voice and video calls, and share media with individuals or groups.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Highlights Signal
Sugggest Score — —
Category Office & Productivity Social & Communications
Pricing — Free

Product Overview

Highlights
Highlights

Description: Highlights is a PDF annotation and note taking app for Windows, Mac, iOS and Android. It allows users to highlight, underline, strikethrough, add text notes, shapes and freehand drawings to PDF documents. Key features include organization of annotations by color category and easy export of notes.

Type: software

Signal
Signal

Description: Signal is a free, open source, encrypted messaging and voice calling app. It offers end-to-end encryption for secure communication. With Signal, users can send encrypted messages, make voice and video calls, and share media with individuals or groups.

Type: software

Pricing: Free

Key Features Comparison

Highlights
Highlights Features
  • Highlight text
  • Add text notes
  • Draw shapes
  • Strikethrough text
  • Organize annotations by color
  • Export notes
Signal
Signal Features
  • End-to-end encryption
  • Secure messaging
  • Secure voice calling
  • Secure video calling
  • Group chats
  • Media sharing
  • Cross-platform availability

Pros & Cons Analysis

Highlights
Highlights

Pros

  • Intuitive interface
  • Available on multiple platforms
  • Useful annotation tools
  • Syncs annotations across devices

Cons

  • Limited free version
  • No OCR text search
  • No collaboration features
Signal
Signal

Pros

  • Strong encryption
  • Open source code
  • Free to use
  • Minimal data collection
  • Secure voice and video calls
  • Self-destructing messages

Cons

  • Limited features compared to other messaging apps
  • Requires phone number for signup
  • Desktop app lacks some mobile features
  • Smaller user base than WhatsApp/Telegram

Pricing Comparison

Highlights
Highlights
  • Not listed
Signal
Signal
  • Free

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Learn More About Each Product

Highlights
Highlights
Reviews, pricing & alternatives →
Signal
Signal
Reviews, pricing & alternatives →

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