Update links and similar apps

assets/text/faq/faq13-difference-other-apps.md

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 ## How is this different from other logging apps?
 
-It's meant to be more battery efficient. A lot of other apps, such as [OpenTracks](https://github.com/OpenTracksApp/OpenTracks), usually go with the assumption that you have a data connection available and your routes won't be very long. They use CPU wakelocks and log points extremely frequently with high accuracy. The aim of GPSLogger is to log points and stay quiet.  
+It's meant to be more battery efficient. A lot of other apps, such as [OpenTracks](https://github.com/OpenTracksApp/OpenTracks), usually go with the assumption that you have a data connection available and your routes won't be very long. 
+They use CPU wakelocks and log points extremely frequently with high accuracy. The aim of GPSLogger is to log points and stay quiet.  
 
 To put it another way, OpenTracks or similar are better suited for runs; GPSLogger is suited for days out, hiking, photography.
 
+[BasicAirData GPSLogger](https://play.google.com/store/apps/details?id=eu.basicairdata.graziano.gpslogger&hl=en&gl=US), [Ultra GPS Logger](https://play.google.com/store/apps/details?id=com.flashlight.lite.gps.logger&hl=en&gl=US) have similar names but aren't associated with this project. 

assets/text/faq/faq17-other-uses.md

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 The GPS files produced by this app are generally used for processing *other* things.  
 
-A common use case is to geotag photos.  Many cameras, especially SLRs, don't have built-in GPS.  After a day (or days) out of photography, you may have hundreds of photos that need to be geotagged so that their locations can appear properly when used elsewhere.  
+A common use case is to geotag photos.  Many cameras, especially SLRs, don't have built-in GPS. After a day (or days) out of photography, you may have hundreds of photos that need to be geotagged so that their locations can appear properly when used elsewhere.  
 
 I have had success with:
 
 * [GeoSetter](http://www.geosetter.de/en/) - GUI, comprehensive options with map display
-* [ExifTool](http://askubuntu.com/questions/599395/how-can-i-batch-tag-several-hundred-photos-with-separately-recorded-gps-data) - command line, lots of options
-* Lightroom's map module - very basic and limited
+* [digiKam](https://www.digikam.org/) - Open Source photo management. Geotagging and geocoding are tools within this software   
+* [ExifTool](http://askubuntu.com/questions/599395/how-can-i-batch-tag-several-hundred-photos-with-separately-recorded-gps-data) - command line, lots of options  
 
 
  There are of course other uses of the produced files, these are a few I've seen over the years; it's usually a combination of a log file produced from GPSLogger with a secondary software to process the files.