This app doesn’t have pause option
Bad app
App doesn’t upgrade even after paying
App doesn’t upgrade even after paying
Ripped off
Although I have purchased the upgrade at page 4 it says failed to verify purchase
Upgrade unsuccessful
I paid to upgrade but App did not upgrade. So I paid again after adjusting my payment method and it still did not upgrade. I'm still stuck with the free version that stops at page 5 and keeps asking me to upgrade after spending money twice to upgrade to paid version
Poor
At page 4, it jumps to advertising for upgrade. It does not go further.
Fab
This app is fantastic and educational no need to upgrade them there the same.