“pdf ebook”

Difficulty

The typical top-10 app has 272K ratings. Big apps own this word. Aim for longer, more specific keywords first.

Keyword in the app name

1 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 14 months ago. Only older, established apps rank here.

Publishers with several spots

• READERA LLC2 apps · best #1
• Librera2 apps · best #4
• Moon+2 apps · best #16

Top 10 average rating: ★ 4.5