Updated Customer service being more responsive. Issue with the app crashing when downloading mostly resolved. BUT Can only download a 50kmx50km area in one go - and the file size is HUGE. Bigger than the file size for the 1:50 000 OS map for the whole of the UK with Viewranger. Downloading contiguous areas with no gaps/overlap is a faff. There is no SD card support - and given the ENORMOUS file sizes this is a major issue on a phone. Accessing downloaded maps is a faff. STILL ZERO STARS.