Filter HTTP Proxy app for iPhone and iPad

The iOS comes with built-in HTTP proxy, anyone who needs them can easily find these setting in system preference. However, there still comes a tiny flaw: HTTP proxy cant be used under 4G.
Another concern of this app is the PAC (proxy auto-config) files. In most situation, one PAC file will be enough, but when you need multiple PAC files from multiple different resources, the user may have to learn how to merge them, make the situation even worse.
So here comes the solution: Filter proxy! It allows you to use HTTP proxy under 4G, make it a quite handy tool for iOS developers, especially when developers are trying to debug behavior specific to 4G. It also allows you to use multiple PAC files as rules, only the rule matched first get the chance to decide which proxy to go.
Best of all, this app will capture absolute zero data from you - and you can verify that by download source code from https://github.com/cnnblike/discord. So there will be absolute no concern about privacy!