Usage stats

This page reveals how are used the online library and the Windows PC application. Stats are delivered for some periods of time:

• since beginning 2020-01-01
• over the rolling past year, i.e. from 2025-09-13 till now
• over the rolling past month, i.e. from 2026-08-14 till now
• over the rolling past week, i.e. from 2026-09-06 till now

Users (distinct IPs):

• since beginning 4459
• rolling past year 1116
• rolling past month 124
• rolling past week 37

Most active countries over rolling past year
(in terms of count of different users, at least 10 users):

• United States 227
• Vietnam 148
• France 105
• Germany 89
• Italy 50
• Serbia 46
• Australia 40
• United Kingdom 34
• Netherlands 29
• Czech Republic 25
• China 24
• Brazil 18
• Spain 16
• Austria 14
• Poland 14
• Romania 14
• Hungary 13
• Canada 12
• Singapore 11
• Denmark 10

Circuit simulations over rolling past year performed from:

• Web 9712
• PC 8210

Counts of tube curves display:

• since beginning 4798
• rolling past year 479
• rolling past month 119
• rolling past week 59

"DCTriode" PC app downloads (includes search engines hits) (this log was not filled from 11/2023 till 4/2025!):

• since beginning 1450
• rolling past year 692
• rolling past month 91
• rolling past week 31