Is there a tweak that disables iOS version checking when downloading apps?

Question

iPhone

Appeared in the iPhone 4 household with iOS 7.1.2. To be honest, I don't want to update the OS. Since I'm not sure that the old hardware will work correctly with the latest firmware, and then it will be impossible to return to iOS 7, since it does not sign ...
The essence of the problem is that the most common applications, such as Gmail or Skype, are not installed and require update iOS to 8 or 9. It seems that there is an option to install them through iTunes, but I would like something simpler.
Maybe there is a tweak in Cydia that removes the version check when downloading applications?
a cursory search in google / yandex did not give any results