Smart underfloor heating control

I moved into my new building (single-family house with KFW55 standard) in 07/2016. The entire house is equipped with underfloor heating. My new building has an air heat pump heating system with a ventilation system (Alpha Innotec KHZ 80) with manual room controllers installed.

Does it make sense to retrofit smart systems like Controme, Tado, Alphaeos, Evohome, especially from an energy perspective and regarding living comfort? Is my heating system compatible?

Does anyone have experience with the above-mentioned systems?

It is a household with 3 people. There is usually always someone at home.

How large is the savings potential?
Can the installation be done by oneself?

What do you want to achieve with that? Underfloor heating is a sluggish system; you can't respond to daily changes with it.

Serious question: What do you want to regulate on the heating system in a house with KFW55 insulation? Night setback no longer makes any sense at all, actually nothing makes sense anymore.

We moved in last year and have only gone through one heating season, but in winter I may have adjusted the thermostats 2-3 times until the temperature was right everywhere, and since then, except for when we were on vacation, I haven't changed anything on the heating. Neither on the thermostats nor on the heating system.

I don't see any point in investing 500 euros or more now, unless you want to have fun. In that case, I would first start with data collection using digital networked thermo- and hygrometers in every room. After that, control might make sense, as a hobby, not for efficiency.