Jeff, if you are referring to me.... People were referring to the track and trace app pinging earlier...I responded to that. Of course I know the difference and that the NHS app relates to vaccination - unlike many people on here. Ctea is basically a shady p and d. If you look at the business relationships you see the same cosy buddies.
The NHS app is very reliable, the issue is with the sensitivity and that can easily be adjusted. If a major overhaul was on the cards I doubt that this would be trusted to basically an untested tiny company.