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Hourglass vs SumatraPDF

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

Hourglass icon
Hourglass
SumatraPDF icon
SumatraPDF

Hourglass vs SumatraPDF: The Verdict

⚡ Summary:

Hourglass: Hourglass is a lightweight time tracking application for Windows, Mac and Linux. It allows you to track time spent on tasks and projects with features like customizable categories, reports, and productivity analytics.

SumatraPDF: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

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 Hourglass SumatraPDF
Sugggest Score — —
Category Office & Productivity Office & Productivity
Pricing Freemium Open Source

Product Overview

Hourglass
Hourglass

Description: Hourglass is a lightweight time tracking application for Windows, Mac and Linux. It allows you to track time spent on tasks and projects with features like customizable categories, reports, and productivity analytics.

Type: software

Pricing: Freemium

SumatraPDF
SumatraPDF

Description: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

Type: software

Pricing: Open Source

Key Features Comparison

Hourglass
Hourglass Features
  • Time tracking with start/stop timer
  • Customizable categories and projects
  • Productivity analytics and reports
  • Available on Windows, Mac and Linux
SumatraPDF
SumatraPDF Features
  • Lightweight and fast PDF reader
  • Supports many document formats like PDF, ePub, MOBI, XPS, DjVu, CHM, CBZ, CBR
  • Customizable with themes, keyboard shortcuts
  • Tabbed document interface
  • Supports annotations and highlighting
  • Continuous scrolling
  • Supports reflowable text
  • Supports digital signatures
  • Supports comics book formats
  • Supports eBooks
  • Supports syncing open documents across devices

Pros & Cons Analysis

Hourglass
Hourglass
Pros
  • Lightweight and easy to use
  • Great for tracking billable hours
  • Open source and free
Cons
  • Lacks advanced features like invoicing
  • Mobile app only available on Android
  • Can be difficult to organize large projects
SumatraPDF
SumatraPDF
Pros
  • Lightweight and fast
  • Supports many document formats
  • Free and open source
  • Customizable
  • Good support for comics and eBooks
Cons
  • Limited annotation features compared to advanced PDF editors
  • Lacks OCR capabilities
  • No cloud storage integration
  • No mobile apps

Pricing Comparison

Hourglass
Hourglass
  • Freemium
SumatraPDF
SumatraPDF
  • Open Source

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Learn More About Each Product

Hourglass
Hourglass
Reviews, pricing & alternatives →
SumatraPDF
SumatraPDF
Reviews, pricing & alternatives →

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