Here I would highlight the Banking apps – which I would recommend everyone to seriously consider using if they have a recent device which has biometric authentication.
Also the Wallet apps which can hold details of store cards – saving space in your physical wallet or purse.
Home control apps, eg Hive
Cardiff Gov app to check on Collection days.
A calculator app
A unit conversion app
Dragon Taxis app
Voice memo app (very useful to record a consultation with a doctor, or anyone else for that matter
A QR Reader app which will quickly take you to a webpage for instance.