They made an update but the time drifting persists. It's annoying, but I guess I'm used to it by now.
I doubt they will ever correct this because it doesn't affect the performance of the equipment. When it should test every X hours, instead it tests every X hours plus 4 minutes.
On a positive note, my unti is still running with the same dosing heads and pH probe since June 2020 and it still provides reliable readings.
The dosing algorithm doesn't react immediately to changes and it takes into account to normal consumption of the tank. Sometimes I wish it reacted immediately but I get that it's a safety feature.
For example if Alk drops below the target, it doesn't start dosing immediately, it waits for the next analysis to be sure it's not a fluke.
When the result is too different from the last test, it tests again.
Given all the other options available in the market, I would buy this again. It has an ugly and not well designed app, but it costs 500 euros, it includes the dosing heads and it does its job.