I have an ancient iPad 4 with iOS 10.3.3. In terms of hardware, it is still sufficient for my needs, as I use it primarily to project files, web pages and videos during lectures. But using it is becoming more and more annoying. There are fewer and fewer programs that can be installed, and sometimes I just have to install something. Recently, I looked for an app compatible with KeePass and found none.
Is there any hope for continued use? For example, would jailbreaking help to get older versions of the software? Or should I just give up and buy something else?
P.S. Neither I nor anyone in my family possesses newer iOS device.