Which of those things do you think are both feasible and able to turn around the virus in the required timeframe?
Improving medicine: decades?
Improving vaccines: 12 ~ 18mo
Improving detection: ???
Isolation of elderly: presumably already in place (are you suggesting something more?)
Improving healthcare: ??? (anything specific?)
I don't think any of these are going to make much of a difference to this pandemic. The vaccines eventually, perhaps. The things that have been shown to work well are NPIs (non-pharmaceutical interventions) such as: contact tracing, testing, mask usage, social distancing. The system that Apple/Google will put in place is essentially automated contact tracing. It will be much faster and have more data than manual contact tracing.