Adguard is currently running a (USA) back to school campaign of 35% off their licences. This works out to be $21.78 for one lifetime licence for Android/iOS.
The coupon code is not needed if you use the link provided.
Pro tips : The 35% off still applies if you connect via VPN through Russia for a bigger discount. I purchased 2x lifetime mobile device licenses for 454 ruble = A$10.09.
Pay with your 28 Degrees Master card if you have one. Mine prompted me for a one time pin it sent to my phone. An extra security step since PayPal is not a payment option.
Discussion about Adguard vs other adblocker can be found in previous post.
https://www.ozbargain.com.au/node/419617
The short version is that the paid Adguard allows blocking of ads within apps, not just browsers by filtering all traffic through a local VPN on your device. Your device does not need to be rooted. From my personal experience using the 7 days trial, Adguard block popup on click ads that Blockada missed.
In Blockada you can use whichever blacklists you like. There are many included by default and only one is activated by default for performance reasons.