Is there a way to customise the sound of the keyboard click that can be turned on / off under:
Settings > Sounds > Keyboard Clicks
IOS custom keyboard clicks sound
audiocustomizationiosiphonesettings
Related Solutions
I believe the setting you are after is in
Settings -> Sounds Change with Buttons = On
It turns out that there is one app that does not have a "Sounds" setting, but still produces sounds and vibrations: Calendar. It's easy to overlook the all-important setting "Calendar Alerts." Tap that, tap vibrate, scroll all the way to the bottom, and set vibration to "None." That should solve it.
Here's your problem right here:
Just turn vibration off:
That's right!
Best Answer
Simple answer: No. You're stuck with the sounds in the interface Apple provides, which have default settings for ringtone, text tone, new voicemail, new mail, sent mail, calendar alerts, reminder alerts and airdrop.
You can customize entries in Contacts to use alternate sounds and ringtones for texts and calls, but that's it.
It may be possible to change the click sound if you jailbreak your iPhone, but I'm just guessing.