Mario Kart Tour

Unless there's a reasonable ingame spending cap I advise against playing the app all together as it's better to avoid the pervasive psychological manipulation of the design of these games.
 
I'm still strictly a free-to-play guy. Haven't spent a single cent yet!
I'm still stuck in the low thirties for ranked cups, but I can live with that. I just want to race as my favorite characters in their fun costumes. I couldn't care less about Happi Peach or Bus Waluigi. Give me Yoshi and Daisy, and I'm set! I don't even use the pipes in tours that don't spotlight my dynamic duo. As such, I have lots of rubies just collecting dust. Well over 600 at the moment. Once a new Yoshi or Daisy costume hits the spotlight, I feel comfortable enough to Fire 10. In between such tours, I just do what I can to collect rubies from tours and wherever I end up in the ranked tours (which still gives me rubies). I also made it a personal rule to accept having 4-star tracks. Or 3 stars, in one particular case previous tour.
The only costume I don't have is Yukata Daisy, and that's just because it happened after I uninstalled the app last year, before re-installing it with my new 4-star rule. Oh yeah, and no playing between 11 pm and 9 am. That was pretty bad.
 
I pay for Gold Pass and Premium, but not rubie bundles. I don't mind. MKT gives me quick happy reward chemicals.
 
I pay for Gold Pass and Premium, but not rubie bundles. I don't mind. MKT gives me quick happy reward chemicals.

I use to have gold pass.

What is Premium?
 
Dr Mario World was shut down because it was not too popular and not making money for Nintendo, MKT makes a decent amount

Regardless, I don't advise putting too much money into free to play stuff if any at all, it's pretty rare for these things to last super long
it made number 1 chart at launch, likely due to brand recognition

but the shut down not only caused by just unpopularity and not making money, it was also the content updates coming at a slow pace
mario kart tour released new content every two weeks
dr mario world used to release content (doctors, worlds) once a month, but it slowed down lately when they started adding the rest of the koopalings (after ludwig and wendy) and a bunch of promoted assistants as doctors (koopa troopa, dolphin, piranha plant, etc)
 
Premium gives you challenge cards that are easy to win with big rewards

Hmm I get challenge cards everyday and I don't have Premium. Does Premium just give you more rewards for those challenges?
 
My phone really hates any variant of Tokyo Blur and Ninja Hideout as of late. SO MUCH LAG