Usage statistics
Usage statistics are collected whenever a user starts calibre. Every calibre installation has a unique ID, this ID remains unchanged by upgrades and even an uninstall/re-install. This ID is used to collect usage statistics. Only this ID is stored, no other identifying information is collected.
Active installs: 366,877 (those that have started calibre at least once in the last 3 days)
Note that installs are not users. A single user could run calibre on multiple computers. A single calibre install could be used by multiple people.
Installs by country (228 countries, top 30 shown):
 |
United States | 14.4% |
 |
Spain | 12.3% |
 |
Germany | 8.7% |
 |
China | 7.1% |
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Italy | 6.0% |
 |
France | 5.8% |
 |
United Kingdom | 4.2% |
 |
Canada | 4.0% |
 |
Netherlands | 2.9% |
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Poland | 2.7% |
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Brazil | 2.5% |
 |
Russian Federation | 2.2% |
 |
Australia | 2.1% |
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Argentina | 1.5% |
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India | 1.3% |
 |
Japan | 1.3% |
 |
Mexico | 1.1% |
 |
Austria | 1.0% |
 |
Czech Republic | 0.9% |
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Hungary | 0.9% |
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Belgium | 0.9% |
 |
Taiwan, Province of China | 0.9% |
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Ukraine | 0.8% |
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Switzerland | 0.8% |
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Turkey | 0.7% |
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Bulgaria | 0.6% |
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Chile | 0.5% |
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South Africa | 0.5% |
 |
Sweden | 0.5% |
 |
Romania | 0.5% |
% of unknown IP addresses: 0.0%
Most popular versions (Top 20):
| 3.40.1 | 32.8% |
| 3.39.1 | 10.5% |
| 3.34.0 | 3.5% |
| 3.38.1 | 3.4% |
| 3.37.0 | 3.0% |
| 3.36.0 | 2.6% |
| 3.35.0 | 2.0% |
| 3.31.0 | 2.0% |
| 3.33.1 | 1.9% |
| 3.32.0 | 1.7% |
| 3.28.0 | 1.5% |
| 3.30.0 | 1.1% |
| 3.26.1 | 1.1% |
| 3.29.0 | 1.0% |
| 3.23.0 | 0.9% |
| 3.15.0 | 0.8% |
| 1.48.0 | 0.8% |
| 3.27.1 | 0.8% |
| 3.14.0 | 0.8% |
| 2.85.1 | 0.7% |
Operating systems calibre runs on
| win | 81.6% |
| osx | 15.4% |
| oth | 2.9% |
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