“books contain”

Difficulty

The typical top-10 app has 749.9K ratings. Dominated by giants. Use it in your description, but chase smaller words to rank.

Keyword in the app name

0 of top 10

None of the top apps use it in their name, so the store ranks by other signals here.

Newest app in the top 10

Released 8 years ago. Only older, established apps rank here.

Publishers with several spots

No publisher holds more than one spot. The results are spread out.

Top 10 average rating: ★ 4.5