I have seen that you really do have a lot of installs already. when did you start this project as you just posted your thread here in the forum recently? also, i was browsing some of the feedback to check if this is a worthwhile app to install in my phone and i found some reviews that I think you should address to maintain the interest of your users. first - if they are earning too little from the surveys and you need to wait for how long just to earn a dollar? they might not be interested to continue answering the surveys. second - the applicability of the survey on a smartphone? but i want to note that there are pretty positive reviews as well on your app.