Insight Timer - Support your meditation practice through a massive community powered app.
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.
Headspace - Meditation made simple. Brilliant things happen in calm minds.
Google Trends - Explore Google trending search topics with Google Trends.
Tergar Meditation Tracker - A meditation support app developed by the Tergar community to help you make meditation a regular activity in your life.
Keywords Everywhere - Free browser add-on for keyword volume, CPC & competition