in germany 0,005 is a natural way to write down numbers (and its not 5). i did not check it yet; but would be nice if you just take the system locale to interpret numbers.
For displaying the US locale is always used. This was by choice (is the same in the original UI).
If the user starts the app once a day, the syncing progress bar hoovers around 99% without any movement for a few minutes.
I think it would be better if the progress bar would always start at 0% and can therefor show some movement.
What I mean: the old (already downloaded) block count is represented by 0% and the up-to-date block count is 100%.
Now the casual user can see some progress bar movement, and all is well