Now that after latest update from Apple for iTunes, Apps option is removed from Library in iTunes.
See Article Here: https://support.apple.com/en-us/HT208075
How should my client, now get the ad hoc IPA, installed to his iPhone. Do the developers now need to deliver through TestFlight beta testing only?
Apple Configurator 2 software from Apple can be used for sideloading - https://itunes.apple.com/us/app/apple-configurator-2/id1037126344?mt=12
Just install the software, connect your device, drag your ipa into the Configurator, as simple as that.
Open Xcode and go to Window Option and select DevicesAndSimulators.
Select your device. and click on "+" icon from the bottom.
click on + button will open window to select you ipa from system.
Happy Coding
Apple published a new version of iTunes 12.6.3 which can be installed over iTunes 12.7 and brings back applications management.
You can download it here: https://support.apple.com/fr-fr/HT208079
I faced the same issue and found that I can install the generated ipa from xcode instead of itunes. I used xcode Windows menu -> Devices and selected my connected iPhone. Then on the installed apps section, I click the + to locate ipa file and install to the iPhone. Hope this helps.
Use Xcode for the same, go to window -> Devices -> Select you device from the list -> Press '+' button under installed apps section
There are many different ways to install the IPA or .app file on the device from your mac machine.
Please refer iTunes 12.7 iPA installation for step by step guide for all these three approaches.
