This is not my field, and I have not used or recommended any of these apps before. The NHS recommends the following wellbeing apps
#StayAlive - The Stay Alive app is a suicide prevention resource for the UK, packed full of useful information and tools to help you stay safe in crisis.
BrightSkyBright Sky - Bright Sky is a free-to-download, confidential mobile app providing support and information for anyone who may be in an abusive relationship or those concerned about someone they know.
Unmind - Unmind is a mental health platform that empowers staff to proactively improve their mental wellbeing.
Zero Suicide Alliance - Zero Suicide Alliance provides you with a range of free online learning sessions that provide you with a better understanding of the signs to look out for and the skills required to approach someone who is struggling, whether that be through social isolation or suicidal thoughts.