Tzolkin Explorer is a free iPhone application developed by Tekin Tontu. It falls under the lifestyle category and brings the ancient Mayan calendar, known as the Tzolkin, into the 21st century. This app allows users to tune into the Tzolkin, a calendar that dates back 3000 years and is synchronized with the Gregorian calendar.

With Tzolkin Explorer, users can track significant times in history and the future. The app provides an easy-to-use interface for exploring the Tzolkin and understanding its significance. Whether you're curious about historical events or interested in predicting future events based on the Mayan calendar, this app offers a unique experience.

Overall, Tzolkin Explorer is a fascinating tool for anyone intrigued by ancient calendars and their connection to our modern lives. It provides a convenient way to explore the Tzolkin and its relationship with the Gregorian calendar, making it an interesting addition to the lifestyle category of iPhone apps.