History Timeline vs World History Encyclopedia App

History Timeline is desktop software for creating and exploring interactive timelines about history. Its time-zoom interface ranges from very long historical spans to events measured in yoctoseconds. Users can begin with an Excel template, import data as CSV, and add events, icons, hyperlinks, styles, and event hierarchies. Timeline items can link to online articles and original documents. The site provides timelines covering world and United States history, geology, science and technology, biographies, and art history. Finished timelines can be saved as JPG or PNG images, or printed across multiple pages with configurable paper size, orientation, and margins. Online display and website embedding, including customized timelines, are available by request. The software runs on Windows 11, 10, or 8 and macOS 10.15 or later, with at least 2 GB RAM and 400 MB free storage. A free version has limited features and content; Personal costs $24.50 a year, Professional $49.50 a year, and Perpetual 119.50 USD one-time.

World History Encyclopedia App is a free mobile reference for students, teachers, and anyone interested in history. Its articles span human civilization from the Stone Age through the 20th century and cover multiple cultures. Articles combine written material with images, custom historical maps, and videos. AI-enhanced search and a curated feed provide discovery tools, while a personal library lets readers save articles, maps, and images for offline reading. The app runs on Android and iOS and is listed at free, with no in-app purchases. World History Encyclopedia says its content is written and reviewed by humans, with staff writers and editors holding history-related degrees. It describes its material as researched, peer-reviewed, and reviewed by multiple editors, and says content is available in 45 languages and counting. The organization identifies itself as a nonprofit supporting educators, students, and institutions worldwide.