HIITList app for iPhone and iPad

Management summary :
Extract sprint intervals from GPS tracks or HealthKit workouts - automatically. Forget these start-stop-lap buttons.

More details :
You are a sprinter.
Your trainings? Intervals. High intensity. 12*60 meters - 8*300... . Pushing a stopwatch button or waking your phone slows you down, so you dont.
Comes HIITList : just power your watch and HIIT. When finished, just let HIITList do the analysis.
(Note : from version 2.0 on, you can use your iOs device to record your training. Continued use of GPS running in the background can dramatically decrease battery life.)

Features :
- Define the intervals you want to track : 60m, 120m, 150m, 300m... . Minimum start speed (to avoid flying starts screwing up your sprints), minimum elevation, minimum speed for an interval to be considered etc... .
- Import tcx/gpx files from iCloud drive, internet or eMail attachments. HIITlist scans them and detects the intervals.
- Or you can record your trainings using your iOs device.
- View performances by training or by interval.
- Interactive Graphs and maps.

Warnings :
- This version was tested with GPS devices that use one second recording. Tracks registered using smart recording might produce faulty results. Support will come in a later release.
- HIITList uses GPS coordinates. Indoor workouts are NOT supported.
- Currently, HIITList is metric only (athletics tracks are metric, so are Olympic distances. Not sure if there is demand for miles. But well add it at users request).
- Speed is expressed in km/hr, not min/km. (Again, well add if upon user request).
- Youll need a GPS device with a barometric altimeter to differentiate between flat tracks and hills. Define your intervals with a large enough (+10mr) maximum ascent and descent for devices without barometers.
- GPS devices have an error margin of a few meters. And one second recording means your start will be missed by up to half a second. So do not expect spot-on times. For reference : a 100 meter race electronically timed at 13:68 was estimated at 13:76 by HIITList. A 200 meter race electronically timed at 27:38 was HIITListed at 26:83. All these races were run with a Garmin ForeRunner 610. You can find some examples on https://hiitlistapp.wordpress.com/.