First you have to download three things:
Filza File Manager // You can install from BigBoss Repo (latest RELEASED version of Filza)
or you can install from Repo: http://tigisoftware.com/cydia/ (latest DEVELOPMENT version of Filza)
AppSync // http://cydia.akemi.ai/
Delta.ipa // https://rozfly.in/droid2
Follow the steps:
Install Filza from above given repo.
install Appsync
AppSync Unified is a tweak that patches installd to allow for the installation of unsigned, fakesigned, or ad-hoc signed IPA packages on an iOS device.
AppSync Unified can be used to downgrade or clone installed apps, to download fakesigned IPAs (often emulators), and also to assist in the development of iOS applications using Xcode.
Open downloaded Delta.ipa , click on share to filza
Save the Delta.ipa in dowloads folder in filza
Open filza
Go to downloads and install Delta.ipa by clicking on delta.ipa then right upper corner to install.