New TIDAL Subscribers: 5 Months of Any Tidal Music Streaming Plan Expired

They must be hemorrhaging cash. I like the service, but it's too expensive for the hi-def plan. $20 month!

I tried it and would not keep it even for free. I mostly listen to Rock and Metal genres, but home page and recommendations are all Rap and Pop.

Sheesh a lot of Tidal hate out there...

I got Tidal included in my cell phone plan and it has been a fine music app for the last 4 or so months I've had a paid or trial subscription to Spotify / Amazon Music / Pandora in the past to compare it to a little as well.

Right off the bat it does make poor recommendations, however I would say that the algorithm for what to play next isn't bad, I started with beastie boys tonight and felt the next several automatic songs were all in the same genre and had a good beat.
You can absolutely download songs offline unlike what others have said. Just hit the little heart on the song and it adds it to your collection if you have the toggle on my collection set to download that song automatically downloads for offline use. Or you can add a song to a playlist and set that playlist to offline mode so it's saved to your local device..... You can also download preconfigured playlist from Tidal etc.. It's very robust here and gives you plenty of options.
The music quality is very good and does let you pick between normal, high, hifi, master quality audio and has options for each as a default whether you are on wifi or mobile data.
There is a "my mix" portion of the app that builds playlist based on bands you have listened to It's pretty amazingly accurate. I don't love a specific genre of music so it's populated me with 8 of these mixes .. One of my mixes has songs from Breaking Benjamin, Shinedown, Disturbed etc, another has collective soul + rhcp etc.. and several other mixes I am a little embarrassed of ( I'm a man who loves Katy Perry songs occasionally sorry! )
It works fine with Android Auto and all my bluetooth headsets etc.. Even my Amazon Echo devices I can just ask it to play "blah blah" on tidal and it works fine, I only have the included free tier of amazon music from prime and if a song isn't on there I just ask it to play from Tidal is my use case there.

As far as the downsides there are not many

it doesn't have Podcast built in, I would like to see that instead of switching back and forth stitcher but that's no biggie.
There are some integrations that it does not have like with my fitbit versa watch, etc that are corner cases. I think only spotify works with that.
It does take getting used to, I hated it the first week or two until I started to understand how it wanted me to interact with it and where things were.

IMHO it comes down to wherever you can get a good deal on a streaming service all of them have little pros and cons.