A Scam...a literal scam never trust them....I started a course ( SEO ) I wasted my 3 days thinking after completing this I will be rewarded with a certificate but no after completing the course this app stopped responding then I tried after a couple of minutes but this time it says "YOU NEED TO BUY PRO MEMBERSHIP FOR GETTING THE CERTIFICATE" . I recommend you to stay away from this instead there are more apps which show ads but give you what you deserve