Learn words and earn rewards

Feels pretty good. It's easy and fun to memorize words, and you can review past mistakes. Skipping 8 or 10 words brings up an ad. You just need to make sure the pet's hunger doesn't drop below 0, which means feeding it once every 24 hours is enough. However, it takes a long time to get rewards because there's a daily gold cap, and higher pet levels require more gold.