History Timeline vs Pliny

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.

Pliny is a history-learning app for iOS and Android, offering short lessons and quizzes about ancient and modern history. Lessons are presented as roughly five-minute reading modules, with optional narration. Available topics include Ancient Egypt, Ancient Greece, the Vietnam War, and the Iranian Revolution; Ancient Rome and World War II are marked as coming soon. Scoring at least 80% on a level quiz unlocks the next chapter. Completing all levels in a topic opens the timed Grand Trial, which can lead to a badge and leaderboard place. The app tracks progress and includes review quizzes. Pliny is currently in early release. Its Free plan costs nothing and provides five gems daily, while rewarded ads can provide more. Premium offers unlimited gems, removes ads, and opens every topic, but no Premium price is listed. Sign-in supports Apple, Google, or email.