- SurveyCow
This app is the best to earn money while using your cellphone. You can earn 200 points per day that equals to 20 cents per day for answering questions that appears on your lock screen. Also there are bonus surveys that can add 150 points. To withdraw the money you need 10,000 Beef points that will pay you 10 dollars directly to your Paypal account.
- S'more- Lockscreen Rewards
S'more is a very good app to earn money. It will pay you 10 cents per day for keeping the app. Everyday will appear some surveys that could pay you up to 32 cents. This app doesn't have Paypal as a method to withdraw money but has Amazon and a lot of others gift cards. You can withdraw the money every time you hit 100 points.
- Slidejoy
With this app you can earn up to 3 dollars per month for unlocking your phone but you can only redeem it on the 18 of each month. It has Amazon or Paypal as a method for cashout.
- Adme
This app pays for unlocking your phone but it's slow. It will take you 2 months to have the 10 dollars to be able to redeem it. Paypal is the only method to cashout the money and only pays every 1 and 15 of each month.
- Whaff locker
Whaff locker is an app that will give you the least amount of money for unlocking your cellphone. About 0.700 cents for about 5 times per day. To cashout they have a lot of options but the amount of money you need to have to redeem them it's to high.