“doc reader”

Difficulty

The typical top-10 app has 1.5M ratings. Dominated by giants. Use it in your description, but chase smaller words to rank.

Keyword in the app name

4 of top 10

Some top apps use it in their name. Having it helps, but it is not required.

Newest app in the top 10

Released 4 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: ★ 4.6