I believe all of the tigers roughly know what is tiger coins. Tiger coins can be use to redeem limited merchandise, stock voucher and profile frames.  

I had joined Tiger broker apps for almost 1 years, but I didnt know how to earn tiger coins at that time (the 1st 6month), I only use the daily sign in coins to predict the market rise or fall. After using tigers app for a period and meet a lot of friends (@koolgal  @HelenJanet  @LMSunshine  @Universe宇宙  @melson  @SR050321  @WanEH  @GoodLife99  @rL  @SirBahamut  @Fenger1188  @SPOT_ON  @Aqa and more) , I managed to get some tips on how to earn tiger coins. 

By sign in everyday and doing the daily mission, you can earned about 50-100 coins per day, roughly 3000 per month. Joining the event or quiz and writing the articles post can earn extra tiger coins(if your post is good, you might have chance to get the editor pick and earn 200 tiger coins) . Beside that weekly predictions and 'predict market rise and fall' also can earn more tiger coins. 

I mainly use my tiger coins to redeem the stock voucher especially HKD88 stock voucher or SGD30 stock voucher. Beside tiger coins, joining the event and activities organized by hardworking tiger staffs have chances to win special tiger gifts! Thanks to @TigerEvents  @CaptainTiger  @Tiger_SG  @Tiger_AU  @Tiger_NZ  @Tiger_chat  @TigerStars 

I hope sharing this experience can help other new tigers to know more about tigers coins and the way to earn them.