I've just installed this and it's pretty simple. You get daily rolls and win crypto. The only snag is there are fees to withdraw so will need to keep rolling every day :) - I guess that's the point lol. But it's simply enough maths to work out if and when to do that.
From my first rolls (I got an extra daily roll because I used a referral) gave me:
SHIB MOSI Slp-tt (no idea what that is) COMI DOGE - see screenshots below

after two rolls the dust starts to accumulated:

Be sure to register the for Daily and Weekly Draws.
If you'd like to try it out, my referral for an extra roll is https://my.cctip.io/activity/daily-airdrop?cc_ref_code=1X1NF
Good luck (I'm not affiliated with the app) but a fan of simplicity :)