This is a summary for all developers. I found these tips super useful:
- Make a good app. doesn't have to be great, but not garbage.
- Use your family and friends for first review and ratings.
- Use review exchange networks, such as Reviewsmotion.com. This helps a lot.
- Be proactive and ask your users to rate you.
- Learn from negative reviews and improve your app.
Thats all! :-)
I hope it helps