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quoting: "... As for "only power users", the free version of calibre cloud has had 10,000-50,000 downloads. That is a lot of people to all be power users."
but what % of free app downloaders actually keep & use an app.
surely the calibre cloud pro downloads count is a better guide to how many would buy, & that is at only 500-1000 installs. ( google)
so whatever option chaley goes for - 1000 sales is a more reasonable estimate ?
I may be underestimating though as an ipad version could bring in a few more 1000s?
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