App Review Times - Find out the average app review times for iOS & Mac apps
KeywordTool.io - KeywordTool.io is the best FREE alternative to Google Keyword Planner and Ubersuggest. It uses Google's autocomplete feature to get over 750+ long-tail keywords for any given query.
App Reviews Dashboard by Appfigures - Monitor, analyze, and reply to app reviews in one place
Keyword Surfer - Get search volumes & keyword data directly in Google.
PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.
Ubersuggest - Want more traffic? Ubersuggest shows you how to win the game of SEO. Just type in a domain or a keyword to get started.