The concept is cool. Infact solving a captcha is not such a difficult task. As per my knowledge $1 is paid for solving 4 simple captchas.
The layout is looking quite cheap which made the app to download and store it in our device. The design is also at the low end on the quality scale.
It doesn't have various features. We have to just solve the captchas and earn money. The minimum payout is $10, 000. The money is redeemable through PayPal.
BUT I HAVE AN ISSUE WITH EARNING MONEY. I'M TYPING THE CORRECT CAPTCHA BUT IT IS POPPING UP A MESSAGE THAT "SOMETHING WENT WRONG, PLEASE TRY AGAIN".
Finally the app is of great usefulness iff ( if and only if) it works well without any issues. Also, it is not available on play store. The app should be downloaded from Google.
So, I would like to conclude that it is waste of downloading this app.