Check out the following sites for mobile apps promotion:
1. getjar.com
2. https://publishers.apps.bemobi.com
3. http://www.businessofapps.com/app-developers/android/
4. https://www.appszoom.com/developers
5. https://appolicious.com/
6. https://developer.applandinc.com
7. https://itch.io/developers
8. https://slideme.org/
9. https://www.appslib.com/
10. https://www.appbrain.com/
11. https://www.amazon.com
https://www.mediapost.com/appyawards/
https://bestappever.com/
https://appcircus.com/
https://developer.apple.com/design/awards/
https://the-appsters.com/index.php
https://www.ericsson.com/thecompany/events/ericsson-innovation-awards
https://www.webbyawards.com/
https://www.bestmobileappawards.com
https://ozapp.com.au/
Free app promotion article:
https://buildfire.com/free-app-promotion/
List of App review sites:
https://docs.google.com/spreadsheets/d/1OkyL-r6XQz0QIat_nVJtVF3pWQGsVOdGcesbBBFrTs0/edit#gid=0