An Interval or Circuit Lap Timer app to record lap times and calculate daily averages for groups of athletes, with the ability to allow for a defined rest/recovery period between laps: the end of the recovery period for an athlete is signalled to the coach by an audio-visual alert. The coach can then advise the athlete to start the next lap and tap the appropriate start button when the athlete starts. The app also offers a Watch interface.

To start using the app, first tap the Settings button to show the Settings screen. Type in a group name. This auto-completes or shows a list of existing groups beginning with the characters typed.

Then set Metric or Imperial,  lap distance and press Done.

If this is a new group tap the plus sign to add athletes to the group.

A CSV file with the names of a group's members can be imported into the app. Each line must be a member's name, the file name must be the name of an existing group with no members and have an extension of '.csv'. Eg: mail yourself the csv file and share it (press and hold the file’s icon for two seconds)- this app should appear as one of the apps to which the file can be shared.

Setting the rest time to 0 enables split-time recording: each press of the stop button records the lap time but does not stop the timer. Press and hold Lap End to record the lap time and stop the timer. Tap Stop All to stop all athletes: this does not save a lap time since the last start.

Each athlete can have a different lap length and different recovery time - double-tap the athlete in the group list to access and update the athlete’s lap length or recovery time.

Notification of the completion of a recovery period occurs even while this app is in the background.

An optional restart countdown timer can be selected to enable the coach to alert an athlete that their recovery period is almost complete.

On iPad there is a 'Race Mode' which allows multiple groups to be started and the athletes stopped from a single screen.

The app handles metric or imperial distances and optional pace calculations.

All group members can be started at the same time or individually.

Unlimited groups of athletes and athletes within each group are possible.

The current day's lap times and averages for a group or an athlete's past lap times can be emailed in CSV (comma-separated-values) format for easy loading into a spreadsheet program eg Numbers (including on iDevices), Excel, OpenOffice etc. A switch in the Settings screen allows ouptut to be one lap per line if creating a file for only one athlete.

The fifty most recent daily average lap times are shown alongside the current day's average lap time and lap information: lap time and optional pace - minutes per km or minutes per mile.

All results are stored on the iDevice and the most recent fifty days' sessions can be viewed, modified and shared at any time.

This app can also be used by individual athletes to time themselves, allow for recovery periods and monitor their own progress.

Lap Timer Manual