Since beginning of this WP8.1 app, I wrote many updates and there was always more Windows Phones users. Maybe someone like to see the usage and statistics for this app:
Until now, after 2 years, the app was downloaded

32.643

times
For Nokia/Symbian devices the app was downloaded 64.000 times.

Here the Addon statistics for 2014:

Addon	purchases
Horizontal	940
Images	278
Combo	200
Statistics	147
Notes	123
Sync	53
Alarms	52
Country	purchases
Germany	518
Italy	413
UK	381
USA	96
Australia	78

Download statistics:

Phone	%
Nokia	91%
HTC	5%
Samsung	3%
HUAWEI	1%
Gendre	%
Man	65%
Woman	35%
Old	%
15-24	14%
25-34	31%
35-44	26%
45-54	21%
55-99	7%