Memory-Map has the ability to record your movements as a tracklog. It also calculates your distance travelled, maximum and average speeds, and time spent moving. You can show the tracklog on the map, and you can transfer it to the Memory-Map desktop application, where you can analyze your speed and elevation profile, etc.
If the application is not used for 6 hours, it will automatically start a new tracklog. Otherwise, you can jump in and out of the program, and it will continue saving points to the same track while the app is open.
When you want to stop recording the track, pull down the data panel, and tap the Stop Logging button. The same button lets you start recording again.
The Logging button is one of the customizable items on the data screen, so you can customize the display to move the button anywhere in data layout. If the button is not displayed, you can tap-and-hold anywhere in the data panel, and Change Data. The "Logging Button" is under the Track folder.
By default tracklog recording is enabled only when the device is on, and the Memory-Map app is displayed on the screen. Memory-Map has the ability to record a tracklog in the background, i.e. while the device is turned off, or while you are using another app.
Tap Menu, Settings, GPS Settings, and enable "Record Track While
App is Backgrounded". While Memory-Map is running in the background,
it must be able to display a small notification icon 
at the top left of the screen. If you disable this notification, then
Memory-Map won't run in the background and won't record your track. In
the Android Settings app, look for something that controls the notifications
for each app (device-specific). It may be under Apps, or it may be under
Notifications. All the notifications for Memory-Map should be enabled.
There may be a setting called "Memory-Map Service" which needs
to be on.
Under the Location Settings for the app (App info, Permissions, Location... or other device-dependent place in the settings app), there may be an option to enable the location service for the app, with "Allow all the time" or it may only offer "Allow while using the app". Don't worry too much if it doesn't offer "Allow all the time". As long as the notification icon described above is displayed at the top left of the screen, Memory-Map is considered to be in use (technically, it is running a "foreground service"). The "Allow all the time" option permits an app to run without giving any indication to the user that it is running and many devices do not permit this kind of service.
Furthermore, many devices have an operating system feature to prevent apps from using too much battery power when running in the background. Memory-Map may be prevented from running, so we recommend disabling any power management features, or setting up Memory-Map as an exception. This is device-specific. If you are able to see the notification icon when you start recording the track, but it later disappears for no apparent reason, it is because the device has killed the app to save battery or to protect your privacy. In the settings app, under Battery, or Power, look for things like "Battery Saver", "Adaptive Battery", "Stamina mode" etc.,
In summary, to record a continuous track while the phone is off or running another app:
is present (top
left). If it is not shown, ensure the "Memory-Map Service"
notification is enabled in the Android Settings.To view the statistics for a track, go to the overlays menu, tracks tab, and select the track of interest in the table. This view let's you rename the track, add notes, and change it's color. You can also delete a track here.