Some times we need to install the IPA file in iOS device , for that we need to have iTunes software but we can install in your iOS device without itunes software for this we need to follow some steps:
1: open this site:
2: see this attachment:
3: after selection the IPA it will upload the IPA and after 100% then click on send.
4: click on “send” after that it will show like that
1: here the barcode show :- just open your registered UDID iPhone camera with this IPA , in front of this Barcode then it will show a pop up on top of camera so just click on that and then install the application.
2: another is URL: here you have to do same things but now you have to open safari browser and type this URL , and load after that you can see the install link then click on install.
you can take extra guide from this: