Hi,
Gone through your requirements and happy to help you. I will promote your app in the online market to increase visibility and ranking. My offer includes.
1. ASO - Optimize the app in play store which is helpful in ranking
2. Submit App - App Submission Online Website Boost Visibility
3. Submit PR - Write the Press Release and Submit in PR submission website improve the awareness.
4. Bookmarking - Bookmarking in Top Website improve ranking in Search Engine.
If you have any questions please feel free to ask and interested to work with me, please ping me on freelancer chat.
Thanks
DJ