Basics

The Timeline is your unlimited list of Marks and Splits. It will usually be empty when you start the app since a new Race file is created for the each day if one does not already exist.

The "Mark" button will create a new Mark when you touch it. It will be yellow if your device does not currently have a good GPS Location.

The list of Marks starts out empty.

Tabs at the bottom let you select between the main Stopwatch, Map, Mode, Twitter Timeline, and Settings views.

When a Mark is created, the time and location are set the moment you create it. The details can then be set before it is sent to Twitter.

The Mark is identified by your Position Name.

The Mark Types encourage you to use turns, intersections, or signs.

The Description should be short. If one is not given, the name is "Mark at " with the current time.

If the Mark has a good Location, the latitude and longitude are shown. Clearing the location is an advanced feature  to be explained in a future post on this support site.

This same view is shown when you select the Detail Disclosure button for a Mark on the Timeline or Map. (Round Blue "i" button on iOS 7.)

When you touch the Mark on the Stopwatch list, a Split is created.

For instance:

Touch the "Mark at 11:45:31" line (not on the blue detail disclosure) after 3 minutes 50 seconds

Comm 2 's manual split with that time shows below the Mark.

The newest Marks are always at the top of the list.

Both the Full and Lite versions provide you a manual stopwatch with nearly unlimited Marks and Splits.

Touch the Split to go to its detail page.

Splits belong to specific Marks.

The Split Time is rounded to 5 seconds.

You can record a note on each split.

If you mark the Note Public, you can send it to appear on your other crew members' apps. The note is sent publicly over Twitter.

(Tweets are limited to 140 characters, so only the first 70-80 characters will be sent.)

The Split and the note can be sent by touching "Send" (or "Resend" if the Split was already sent.) You may get a "Duplicate Tweet" error if you do not enter new text because Twitter does not allow identical tweets.

When Use Twitter is ON in settings and you have the same Hashtag set as other app users, their Tweets will show as Marks and Splits in your Timeline.

This is a view of Comm 1's app.

A green pin or graphic with a green background is an active Mark.

Here Comm 1 is around seven minutes behind Comm 2. The app compares the current GPS location with the active Marks and automatically creates and sends a Split.

Comm 1 is approaching the Canary Drive sign.

Once a Mark has a manual or location triggered Split, it will become inactive. This allows you to provide greater accuracy by manually triggering a Split when you see riders in the corner, for instance.

The Map tab is another view with the Marks shown as pins.

Green pins are active Marks.

The blue circle is your location.

The button in the upper left toggles the mode to follow your location.

Touch a pin to see details. The detail disclosure ("i" in a blue circle on iOS 7) will take you to the Mark update page. (The free 321 Mark Lite version does no offer the information from other users, but does interact in to make your iOS device part of the crew.)

Red pins are inactive Marks. They are either ones you drove by and triggered or they are ones you created.

The Mode tab controls the automatic Mark feature.

Select LEAD when you are the head of the race with the leaders. An automatic mark will be sent every X number of minutes as set by the Mark Interval in Settings.

Select RESPOND for the normal mode. This will create a Split whenever you arrive at an active Mark. In this screenshot, Respond is selected.

Select OFF to turn off Location Services for the app. This will save battery. You also may not want to report Splits if you are not currently with riders.

Select one of the first two modes to turn Location Services back on. It takes several seconds to get a good GPS location again after selecting LEAD or RESPOND. Touching LEAD a second time will send a Mark if the app currently has a good GPS location.

The GPS uses a lot of battery so have your device plugged into car power if possible. There is a battery save option in Settings that sacrifices some accuracy.