Event Logger 3.0 is a free iPhone application developed by SmartUtils, falling under the Business & Productivity category. This program allows users to effortlessly log, recall, and analyze statistics for various events. Events can range from personal experiences to observations or activities. Users can define multiple events, group them, log occurrences with notes and numerical data, and even protect events with passwords. The app enables users to plot trend lines, daily, weekly, and monthly summaries, and obtain detailed stats on event frequencies and data. Additionally, it supports features like backup/restore to Dropbox, exporting logs in CSV format, dark mode, and works both online and offline.