Offline display of FIT files. Garmin's Flexible and Interoperable Data Transfer (FIT) protocol is specifically designed to store and share data from exercise, fitness, and health devices. GPS FitFile Tools decodes all file types such as activity, workout course files etc. and displays the data clearly in lists and diagrams. To check the recording quality, a list of recorded records can be displayed. For easier selection of sentences, there are filter functions. The display takes place after sessions and rounds. A record list of possible recording errors appears. All recorded data can be exported in CSV or XLS formats. Messages, fields and data not described in the Garmin Fit SDK can also be displayed.