The pricing sucks, more now than it did before. The ideal pricing tiers would work something like this and all prices are USD:

Ad-Free is $5/month for 12 months, $6.67/month for 6 months, $8.34/month for 3 months, and $10/month for 1 month.

Extra is $10/month for 12 months, $11.67/month for 6 months, $13.34/month for 3 months, and $15/month for 1 month.

Unlimited is $15/month for 12 months, $16.67/month for 6 months, $18.34/month for 3 months, and $20/month for 1 month.

Squeezing people that don't want to pay at all won't suddenly make them want to pay for the app. Shit prices are shit prices and people won't pay for that.

Edit: I think the add free tier is bullshit and it shouldn't exist.