When wearing headphones the cashing sound the app makes when receiving money is so extremely loud it nearly burst my eardrums, it is always on max volume no matter what the volume of the phone is.
I’m sure others have experienced this 
hopefully someone from Monzo fixes this…
It would help if you could say what phone you are using. At the very least whether it’s Apple or Android, as they are two different apps. Also if Android, someone might be able to advise you how to check other volume settings as they can be awfully granular.
airpods pro
Great, so iPhone? or Android? I assume iPhone, but we need more information
iOS has weird bugs, I have a bug where my keyboard typing ‘click’ sound goes really loud for a little bit
I’ve had this for at least a couple of years now (so over at least two different iPhones). Lots of people mentioning it on Macrumors, too.
Yet we choose to still use them 
and buy them on release
Well, I’m not going to switch to Android just because my click goes louder for a few seconds 
Since haptics happened I haven’t heard my keyboard make a peep. Also silent mode 4 life.
Same can’t remember last time my phone made a noise.
I may just disable the keyboard clicks, but keep the haptics
Keyboard clicks are fine, it’s just the Monzo app which has and extremely loud strident noise for the cash in notification