Hi, so i have an external gps logger model BTGP-38KM. i use it on trips especially where there are no 'roads', such as bush-walking and horse-riding, to record where i've been then match up the track locations to photos. on windows this is easy using GPSbabel to download the tracks as files, however i was wondering if anyone knew a way to do this with android. the GPS model i have only connects via bluetooth (has a cable for charging, but it does not transfer data) and only holds a few days' worth of data at a time (if i leave it on all day) before going back and overwriting the earliest GPS data. i wish to use the unit for an upcoming 5-week trip. it's difficult to search google on this as every search result refers to using an external GPS linked to android for real-time usage. i don't want that as it will drain my phone battery, i want to record on the GPS unit, then download to my android as a file. There seems to not be a GPSbabel alternative for android that can do it? i plan on having my android turned off during the day, turning it back on at night for backing up photos (using ES file explorer app) and GPS data (??), and being an alarm for the morning (which can be done in airplane mode to save battery) then also for calling home (which i will do via facebook messenger/hotel wifi where possible). FYI my phone is samsung galaxy s4 i9505, running stock android 5.0.1, if that makes any difference to anyone. thanks for any advice.