Solar Time Free is a lifestyle application developed by SpeedyMarks for Android users. This app shows the apparent solar time, which is the time you would see on a sundial at your current location. It calculates the combination of the mean solar time, the time difference from the solar equation, and optional daylight saving in the summer. The app also changes the background color based on the time difference from the solar equation.

The app has several features, including the ability to toggle the display of seconds, toggle between 12 and 24 hours, see the time difference in detail, and support for phones and tablets. Additionally, the app automatically updates your location as you move. The app is free to use but is ad-supported.

Solar Time Free is a useful app for those interested in tracking apparent solar time. The app is easy to use and provides accurate information about the time you would see on a sundial at your current location. However, the ad-supported model may be a turn-off for some users.