Mastodawn

One-time payment for ad-free is live in Beta 25. It's $19.99 USD. Update your app if you don't see it

Tap the account switcher in the top left corner and you should see the option.

I’ve just checked, the lifetime price is showing up as £95.99 to me ($120) that seems a bit steep!

Then don’t buy it? There’s a $20 option that only removes ads