It depends of an app and technology used. From x1 to x3.
It's believed that iPhone platform bringing in more revenue:
https://9to5mac.com/2016/01/20/app-store-ios-downloads-vs-android-revenue/
Just as excluding situations where web studio steals a web site.
http://webcache.googleusercontent.com/search?q=cache:s9u1AnhVPlgJ:www.forbes.com/sites/tristanlouis/2013/08/10/how-much-do-average-apps-make/+&cd=1&hl=en&ct=clnk&gl=se
Check this out: https://github.com/pmachapman/mysqltuner/
It needs tuning of my.cnf. Just run mysqltuner and follow its recommendations.
https://yandex.ru/blog/webmaster/20960
What about increasing number of outgoing links from your site? Not hurt?
☝
🤣
https://seopult.ru/faq.html
Nginx can also write files to: access_log, *_cache_path, *_temp_path
To see all the files, execute:
lsof -n | grep nginx
There are no simple solutions. Theoretically, you can issue a certificate for '*.*.domain.com' but all browsers don't support it. However, you can include up to 100 subdomains in one certificate, for example:
domain.com
*.domain.com
*.client1.domain.com
*.client2.domain.com
and so on
But it's surely you do not like :)
In this case you should pay even more (VAT, 18%) via online service: http://lkio.gnivc.ru/ru
Change your hosting service to more adequate one.
¯\_(ツ)_/¯
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