Kilpsch uses in room efficiency instead of anechoic sensitivity like the majority of the industry. This makes their numbers bigger as it assumes a certain level of reflective gain. Just take 6db off most of their specs and you will get close to their anechoic sensitivity. It is a real number, just not one others use so its highly misleading when comparison shopping.
I tend to use the HEOS app for Tidal but streaming services arent my primary source at home. I use it to find new music and when out of the house primarily. I also have and use Bubble for various endpoints (mostly non-HEOS). For playing back network files (not streaming services) I prefer a touchscreen laptop loaded with JRiver as my “remote control”, far more options than any mobile app.
The HEOS app is ugly and a bit clunky but has great Tidal feature integration IMO. You can also mix sources into one queue which can be handy for comparisons. I don’t believe FLAC above Redbook quality is available via 3rd Pary API… yet.