opentracksapp/opentracks

OpenTracks is a sport tracking application that completely respects your privacy.

OpenTracks: a sport tracker

OpenTracks is a sport tracking application that completely respects your privacy.

Free (F-Droid)	Free (Nightly for F-Droid)	Donations

Translations are hosted on hosted.weblate.org.

Screenshots

Features

• Tracking: track your sport and outdoor activities

• Voice announcements

• Photos and Markers: mark interesting locations while tracking

• Export:

  • export tracks either as KMZ 2.3 (incl. photos), KML 2.3, or GPX 1.1
  • export automatically after each recording (e.g., to sync via Nextcloud)
  • avoid duplication: each exported file contain a random unique identifier (i.e., opentracks:trackid)

• Altitude:

  • gain/loss via barometric sensor (if present)
  • shown in EGM2008 (above mean sea level); exported as WGS84

• Bluetooth LE sensors:

  • heart rate
  • cycling: speed and distance
  • cycling: cadence
  • cycling: power meter
  • running: speed and cadence
  • support for BLE sensor training only (i.e., without GPS) for indoor training

  An overview of tested sensors: README_TESTED_SENSORS.md

Gadgetbridge integration

OpenTracks can be used with Gadgetbridge:

• shows statistics via notification on smart watches (requires Gadgetbridge 0.56.1 or later), and
• Gadgetbridge's GPX exporter generates opentracks:trackid to avoid duplication (Gadgetbridge 0.53.0 or later).

Privacy

• No Internet access: Internet is not used
• No advertising
• No in-app analytics
• No use of Google Play Services

Only required permissions:

• ACCESS_FINE_LOCATION: required to use the GPS.
• ACCESS_BACKGROUND_LOCATION: required to start recording with GPS while phone is in standby. (e.g. when triggered by Public API from an external device)

Public API

OpenTracks includes an API for starting/stopping recording by another installed application (e.g., Automate, Tasker, or Easer). The API can be invoked by sending an explicit Intent to start an activity.

Package (depends on the variant installed):

• F-Droid: de.dennisguse.opentracks
• GooglePlay: de.dennisguse.opentracks.playStore
• Debug: de.dennisguse.opentracks.debug
• Nightly: de.dennisguse.opentracks.nightly

Class:

• Start a recording: de.dennisguse.opentracks.publicapi.StartRecording
• Stop a recording: de.dennisguse.opentracks.publicapi.StopRecording

For testing via adb: adb shell am start -e someParameter someValue -n "package/class"

StartRecording supports the following parameters:

• Set track data: TRACK_NAME, TRACK_DESCRIPTION, TRACK_CATEGORY, and TRACK_ICON (non-localized identifier see /src/main/java/de/dennisguse/opentracks/util/TrackIconUtils.java#L38). NOTE: if TRACK_ICON is not present, TRACK_CATEGORY will be used to determine the icon (localized).
• Send recorded data to another application via Dashboard API: STATS_TARGET_PACKAGE and STATS_TARGET_CLASS

The Public API is disabled by default to protect the user's privacy, but it can easily be enabled in the settings.

File formats compatibility with open-source software

	GPX 1.1	KML 2.3	KMZ 2.3
OpenLayers 7.1.0	?	no	no
Golden Cheetah 3.5	?	no	no
GpxPod	?	?	?
OsmAnd	?	no	no
FitTrackee	yes	n/a	n/a
SportsTracker	yes, single tracks only	no	no
ExifTool	yes	no	no

Dashboard API (incl. map)

As of v3.3.1, OpenTracks supports custom dashboards for displaying previously recorded and live tracks.

The reference implementation is OSMDashboard, which presents an OpenStreetMap map (showing the current track, incl. updates). The Dashboard API is also used by Gadgetbridge for displaying live track statistics on supported wearables.

Alternatively, recorded tracks can be shared as KMZ/GPX with installed applications ( e.g., OsmAnd). However, this is rather slow and does not provide updates while recording.

The developer documentation is in README_API.md.

Project history

OpenTracks is based upon Google My Tracks app (code). My Tracks was initially released by Google in 2010 as open-source software. In 2016, Google decided to discontinue My Tracks and stopped distributing it via the Google Play store in April 2016. Then Plonk42 conducted some maintenance work until 2016, so My Tracks could still be used (based upon version Google's MyTracks version 2.0.6). Plonk42's version is available here. In 2019, OpenTracks was forked from Plonk42's My Tracks and major rework was conducted.

Rework of OpenTracks included:

• removing Google's analytics code,
• removing integration into Google Drive,
• removing Google Maps integration,
• removing Google Earth integration,
• removing use of Google Play service,
• removing calorie estimation and activity estimation,
• removing support for ANT+ and Classic Bluetooth,
• adding support for Bluetooth LE heart rate sensors,
• removing Protobuf (store sensor data in SQLite columns directly), and
• removing Android Service API for other apps.

Artwork, logos and user interface remained more or less unchanged.

More information about Google My Tracks:

• Wikipedia page
• Google code archive

opentracks's Issues

Fix available tests

At the moment, some test (using mocking) cannot be compiled.

Move keys.xml into code

For some reason preference keys were extracted to keys.xml.
Moving them back into the code (e.g., PreferenceUtils) would make the code more readable.

Export/Import: ask for external storage permission

Ask for the following permissions if not given:

• android.permission.WRITE_EXTERNAL_STORAGE
• android.permission.READ_EXTERNAL_STORAGE

Otherwise, show a Toast message.

Upgrade to Gradle 5.6

Export: option to export with and without pictures

At the moment, pictures are only included in KMZ exports (not in GPX neither in KML).

1. Make this difference visible in the export dialog
2. Also allow KMZ to export without pictures

Rework stats_layout

The stats_layout (used by TrackDetailActivity) has highly nested layout.
This should be simplified to make maintenance easier as well as the layout faster.

Using GridLayout would an option.

Bug: heart rate does not seem to be exported.

It seems as if the heart rate is not exported.

Continuous integration

Enable Continuous integration (TravisCI?) to format the code as well as execute tests.

• configure CI (build)
• setup CI
• configure CI (test)

Blocked by #5.

Bluetooth LE sensors: show battery info

Description: add spanish translation

Will be shown in Fdroid.

Settings: make import all and export all fragments.

At the moment, import all and export all are two standalone activities.
It might be beneficial to convert these to fragments.

https://github.com/dennisguse/OpenTracks/blob/master/src/main/java/de/dennisguse/opentracks/io/file/importer/ImportActivity.java

https://github.com/dennisguse/OpenTracks/blob/master/src/main/java/de/dennisguse/opentracks/io/file/exporter/ExportActivity.java

While recording: keep screen awake option

Add this functionality to the overflow menu (only temporary).
Add this functionality to the preferences (permanent).

[FR] GadgetBridge data fetching

As the app supports heart rate then it's easier getting it from a fitness tracker. And subj is one open platform which can provide this info from a number of fitness trackers. Gpx available from some trackers too.

Bug: does not reconnect sensor?

It seems that reconnecting to the heart rate sensor is not working resulting in such diagrams.
Workaround: Stopping and starting a new track works.

Setup Translation management systems (TMS)

Option would be to use translate5?

ShareOnMap: make amount of data configurable

At the moment, the whole track as KMZ without sensor data is transferred.
However, this does also includes track name as well as timestamps.

It would be great to make this configurable of the user.

Share track with map application

OpenTracks cannot (and will not be able) to show tracks directly on a map.
However, sharing the record track data with an installed map application should be available.
Then, the user can select in which application the data should be shown.

Implement it so that only location information is transferred (e.g., no sensors, no timestamps, no images, no description, no activity).

Rework layout for `TrackDetailActivity` (portrait only)

TrackDetailActivity uses a very nested layout, which is bad for the performance as well as maintenance (even LINT complains with DuplicateIncludedIds).
It needs to be refactored while looking similar.

See also #15.

Migrate to androidx Preferences

Migration to androidx Preferences (deprecated) was done in v3.2.1
Next step is to migrate to androidx Preferences (most recent API).

This also includes fixing the summary of the default activity preference.
And check if the workaround for ´stats_rate_key´ is still needed.

ExportActivity, ImportActivity, and DeleteActivity

It would be great if this would an overlay showing the actual UI below.
At the moment, the background is just black.
Could this be done as a fragment?

Make registering pictures at MediaScanner configurable.

If a marker is created as a picture, the picture is registered at the media scanner to make it visible in picture gallery applications.
This feature should be configurable.

Fix data export to KML/KMZ

The data export uses semi-standardized Google extensions for KML (e.g., gx:multitrack).
This, however, only seems to be supported by Google Earth?

https://developers.google.com/kml/documentation/kmlreference#gxmultitrack

Convert instead to standard KML.
https://developers.google.com/kml/documentation/time

Import/export from settings instead of menu

At the moment, all tracks can be export from the TrackListActivity.
However, this might not be the most used functionality and thus could be moved to the settings.

Fix string resource to be plurals (if needed)

<issue id="PluralsCandidate" severity="Warning" message="Formatting %d followed by words (&quot;hours&quot;): This should probably be a plural rather than a string" category="Correctness:Messages" priority="5" summary="Potential Plurals" explanation="...." url="http://developer.android.com/guide/topics/resources/string-resource.html#Plurals" errorLine1=" &lt;string name=&quot;voice_hours_few&quot;>%1$d hours&lt;/string>" errorLine2=" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"> </issue>

See LINT warnings for a complete list of entries.

Bug: heart rate is not shown although being recorded

While recording (and being connected to a heart rate sensor), the heart rate is properly shown.

When going to the chart view and back, the heart rate is not shown anymore although the connection to the sensor is still ok.
However, StatsFragment complains that it connect to the TrackRecordingService and thus does not show any data.

https://github.com/dennisguse/OpenTracks/blob/a413a4c4981caaa6b8346d00832e7ce064e03b43/src/main/java/de/dennisguse/opentracks/fragments/StatsFragment.java#L306

Workaround: go back to the list view showing all tracks and open the currently recording track.

Continue a stopped track

At the moment, after stopping a track it cannot be continued.
This behavior, however, is quite annoying if you stopped tracking by mistake.

Bug: enable share track from search

After search the share track is not setup to do something.

Present elevation gain (via barometer)

GPS data is usually to imprecise to record the elevation gain (therefore it was disabled in OpenTracks).
Use the barometer to record the elevation gain.

While recording: make app visible without unlocking the phone

Should be configurable in the preferences.

Export to KML

At the moment, export (via menu->export all) does not allow to export as KML.
If KML is chosen, the data is exported as zipped KML (i.e., KMZ).

TrackListActivity: gps not yet fixed

In TrackListActivity the user can start the gps - it would be great to show an icon saying "gps online, but no fix yet".
Currently, the "gps got a fix"-icon is shown immediately.

Use ic_gps_not_fixed.

(Re-)implement landscape support for `TrackDetailActivity`

The landscape support of TrackDetailActivty was broken and thus removed in https://github.com/dennisguse/OpenTracks/commit/f8e3b28e51ddc02e98ea147db887e8d6bc9f3188

This issue is blocked by #31.

Share track: incl. actual track data

At the moment, only a summary (as text) is shared while not sharing the actual data.
Needs to be done in ShareActionProvider while the actual data needs to be stored in a temporary file.

TrackDetailList: move delete all to Settings

TrackDetailActivity: disable activity type changer in view mode

While viewing a recording (i.e., after recording), the activity type changer should be disabled.

Use ShareSheet?

Use ShareSheet instead of ShareActionProvider?

https://developer.android.com/training/sharing/send.html
In ToolbarUtils, the ShareActionProviders are configured.

Bug: sensor data diagram handles missing data wrongly

As the heart rate sensor is disconnected (and not reconnected; see #41), the diagram should not draw the last point in the heart rate diagram (0bpm).

While recording: make TrackDetailActivity visible without unlocking the phone

While recording it would be great if TrackDetailActivity would be shown on the lock screen and thus avoiding to unlock the phone.

Add a FAQ/help section

It would be great to have a FAQ/help section in the app.
For example:

• steps to connect to a heart rate sensor
• what can go wrong with a heart rate sensor
  • what is required
  • what does not work (e.g., devices)
• limitations of GPS sensors (in terms of precision and startup time)
• how to export and import tracks (amount of data varies by file type; KMZ being the most complete)
• how to show recorded data (other app that can do that, e.g., OsmAND~, MapsMe)

Show direction via compass while recording

While recording, showing the direction via compass (if available) would be very helpful.
UI needs to be added to TrackDetailActivity.

Gathered data must not (yet) be stored.

PS: Add a new task to store the compass direction if not yet implemented.

TrackDetailActivity: landscape layout broken

The landscape layout does not show all data fields (although it should).

Migrate to SummaryProvider

Warning is reported.
ListPreference: Setting a summary with a String formatting marker is no longer supported. You should use a SummaryProvider instead.

https://developer.android.com/guide/topics/ui/settings/customize-your-settings#dynamically_update_summaries

Material design icons

Use material design icons (SVG) everywhere.

• Menu items
• everywhere else (e.g., activty type)

https://material.io/tools/icons/?style=baseline

Crash when opening Settings activity

Thanks for this great app!

I have searched open issues but didn't find this one, sorry if i have missed it.

For some reason, after a while, settings stopped working - when i try to open settings screen, app crashes.

Version V3.2.1, from F-Droid.
Samsung S7 Edge, Android 8.

Below is adb shell logcat

thank you

10-21 19:04:03.697  3671 14055 D ActivityManager: isScaleDownAnimationEnabled() : false
10-21 19:04:03.698  3671 14055 V WindowManager: rotationForOrientationLw(orient=-1, last=0); user=0  sensorRotation=-1 mLidState=-1 mDockMode=0 mHdmiPlugged=false
10-21 19:04:03.702  3671 14055 D PersonaManagerService: Current focused persona service handled id set to : 0
10-21 19:04:03.702  3671 14055 D InputDispatcher: Focused application set to: xxxx
10-21 19:04:03.705  3671 14055 D InputDispatcher: Focus left window: 18097
10-21 19:04:03.707  3671  3962 D GameManagerService: handleForegroundChange(). pkgName: de.dennisguse.opentracks, clsName: de.dennisguse.opentracks.settings.SettingsActivity,FgActivityName:de.dennisguse.opentracks/.settings.SettingsActivity
10-21 19:04:03.707  3671  3962 D GameManagerService:   handleForegroundChange(). same package with Prev KILL_YOURSELF. ignore
10-21 19:04:03.708  3671 14055 D MARsPolicyManager: onPackageResumedFG pkgName = de.dennisguse.opentracks, userId = 0
10-21 19:04:03.716 18097 18097 D ViewRootImpl@4a19370[TrackDetailActivity]: MSG_WINDOW_FOCUS_CHANGED 1
10-21 19:04:03.717  3671 14055 D InputMethodManagerService: startInputOrWindowGainedFocus : windowGainedFocus 
10-21 19:04:03.717  3671 14055 D InputMethodManagerService: windowGainedFocus: destinationUserId (getCallingUid) = 0
10-21 19:04:03.717  3671 14055 D InputMethodManagerService: windowGainedFocus: currentUserId=0
10-21 19:04:03.717  3671 14055 D InputMethodManagerService: windowGainedFocus: mCurrentFocusedUserId=0
10-21 19:04:03.718  3671 14055 D InputMethodManagerService: windowGainedFocus : lock - currentUserId = 0 destinationUserId = 0
10-21 19:04:03.718  3671 14055 D InputMethodManagerService: windowGainedFocus : mCurrentFocusedUserId - 0 and mSecureKeypadEnabled - false, userSwitched - false
10-21 19:04:03.718  3671 14055 W InputMethodManagerService: Focus gain on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@cba9bf4 (uid=10041 pid=18097)
10-21 19:04:03.718  3671 14055 W InputMethodManagerService: calledFromValidUser : true, (mCurFocusedWindow == windowToken) : true, (attribute != null) : false
10-21 19:04:03.718  3671 14055 W InputMethodManagerService: (mCurClient != cs) : false, mCurFocusedWindow : android.os.BinderProxy@4c83c2, windowToken : android.os.BinderProxy@4c83c2
10-21 19:04:03.718 18097 18097 E ViewRootImpl: sendUserActionEvent() returned.
10-21 19:04:03.730 18097 18097 D AndroidRuntime: Shutting down VM
10-21 19:04:03.731 18097 18097 E AndroidRuntime: FATAL EXCEPTION: main
10-21 19:04:03.731 18097 18097 E AndroidRuntime: Process: de.dennisguse.opentracks, PID: 18097
10-21 19:04:03.731 18097 18097 E AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{de.dennisguse.opentracks/de.dennisguse.opentracks.settings.SettingsActivity}: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2957)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3032)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.ActivityThread.-wrap11(Unknown Source:0)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.os.Handler.dispatchMessage(Handler.java:105)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.os.Looper.loop(Looper.java:164)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.ActivityThread.main(ActivityThread.java:6944)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at java.lang.reflect.Method.invoke(Native Method)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.SharedPreferencesImpl.getString(SharedPreferencesImpl.java:255)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.Preference.getPersistedString(Preference.java:1686)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.ListPreference.onSetInitialValue(ListPreference.java:255)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.Preference.onSetInitialValue(Preference.java:1614)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.Preference.dispatchSetInitialValue(Preference.java:1587)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.Preference.onAttachedToHierarchy(Preference.java:1311)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.Preference.onAttachedToHierarchy(Preference.java:1326)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceGroup.addPreference(PreferenceGroup.java:249)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceGroup.addItemFromInflater(PreferenceGroup.java:170)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceInflater.rInflate(PreferenceInflater.java:345)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceInflater.rInflate(PreferenceInflater.java:346)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceInflater.inflate(PreferenceInflater.java:157)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceInflater.inflate(PreferenceInflater.java:109)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:216)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceFragment.addPreferencesFromResource(PreferenceFragment.java:386)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at de.dennisguse.opentracks.settings.SettingsActivity$PrefsFragment.onCreatePreferences(SettingsActivity.java:65)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at androidx.preference.PreferenceFragment.onCreate(PreferenceFragment.java:167)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.Fragment.performCreate(Fragment.java:2593)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1234)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2421)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2200)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2154)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2055)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.FragmentManagerImpl.dispatchMoveToState(FragmentManager.java:3050)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:2997)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.FragmentController.dispatchActivityCreated(FragmentController.java:179)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.Activity.performCreateCommon(Activity.java:7177)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.Activity.performCreate(Activity.java:7185)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1220)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2910)
10-21 19:04:03.731 18097 18097 E AndroidRuntime: 	... 9 more
10-21 19:04:03.737  3671 14055 D Debug   : !@DumpState : SHIP
10-21 19:04:03.738  3671 14055 D Debug   : !@DumpState : debug level:0x4f4c
10-21 19:04:03.738  3671 14055 D Debug   : !@Dumpstate : Finally, system will skip dumpstate
10-21 19:04:03.738  3671 14055 W ActivityManager: crash : de.dennisguse.opentracks,0
10-21 19:04:03.739  3671 14055 W ActivityManager:   Force finishing activity de.dennisguse.opentracks/.settings.SettingsActivity
10-21 19:04:03.748  3671 14055 W ActivityManager:   Force finishing activity de.dennisguse.opentracks/.TrackDetailActivity

Add new activity types (incl. icons)

• MTB
• eScooter
• Motorcycle
• Skateboard
• Sailing
• Inlineskater
• Skiing (was removed)
• Snowboarding (was removed)
• Climbing

Convert all graphics to SVG

Except icons in #8.

Improve moving detection using motion sensor

In addition to GPS, the motions sensor could be used:

• SensorManager.TYPE_STATIONARY_DETECT
• SensorManager.TYPE_SIGNIFICANT_MOTION

Bug: heart rate sensor cannot be changed while recording

The BluetoothConnectionManager does not listen for preference changes and thus does not react to changing the heart rate sensor.
It should disconnect and then try to connect to the new sensor.

Bluetooth sensors: add multiple sensors

Add support for recording the speed via a Bluetooth LE Speed Sensor and use this to show the current speed while recording.
Especially for cycling GPS based speed is to imprecise.

Speed data should also be recorded in the database.

Remove default preferences from code

The defaults for preferences are defined in code as well as in the xml-files.
This duplicates this information and will lead to problems if both get out of sync.