Ghost Control or Tasker work well.
As for the $25, if you leave the site going for a few hours a day, not even including referrals or cash prizes, you'll reach 25,000 in approx 5 days or so. I started it up about 4 days ago and I'm up to 21,000 without doing hardly anything. By tomorrow I should have enough for a gift card. I'll likely save up the points til I can get a more expensive card but we'll see what happens.