Hey,

I am CEO @ Incredo (www.incredo.co) and we do app marketing for start-ups

Assuming you have already on Google Play or Appstore you may consider submitting your app to other marketplaces as well. There are various other app stores on the online market where you can upload your app. According to One Platform Foundation, if an app is submitted on other relatively less popular stores, it will increase the expected downloads 200% more compared to Google Play.

These are some very good app stores that you should consider:

--GetJar
--SlideMe
--Opera Mobile Store
--AppsLib
--Amazon Appstore
--AppBrain

Participating in app awards is the most recommended channel and I would highly suggest you take advantage of it. It can give you tons of press, exposure, reviews and plenty of downloads. Although the chances of winning very much depend on your pitch and app idea, however, if you manage to get things right the first time, you can expect to enjoy a little stardom.

These are some of the most famous app awards sites:

--Appy Awards
--Best App Ever Awards
--AppCircus competition
--Apple Design Awards
--Appsters Awards
--Ericsson Application Awards
--The Webby Awards
--Best Mobile App Awards
--OZApp

Hope these help.

If you need any help with ASO or Paid user acquisition please let me know

Answer source: buildfire.com